lydia@pop-os:~$ efibootmgr BootCurrent: 0001 Timeout: 2 seconds BootOrder: 0000,0001 Boot0000* UiApp Boot0001* WDC WDS100T2B0C-00PXH0 lydia@pop-os:~$ sudo terminal [sudo] password for lydia: sudo: terminal: command not found lydia@pop-os:~$ sudo -i root@pop-os:~# os-prober Command 'os-prober' not found, but can be installed with: apt install os-prober root@pop-os:~# apt install os-prober Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: grub-common Suggested packages: multiboot-doc grub-emu xorriso desktop-base The following NEW packages will be installed: grub-common os-prober 0 upgraded, 2 newly installed, 0 to remove and 293 not upgraded. Need to get 1,873 kB/1,893 kB of archives. After this operation, 13.8 MB of additional disk space will be used. Do you want to continue? [Y/n] y WARNING: The following packages cannot be authenticated! grub-common os-prober Install these packages without verification? [y/N] y Ign:1 http://us.archive.ubuntu.com/ubuntu groovy-security/main amd64 grub-common amd64 2.04-1ubuntu35.6 Err:1 http://us.archive.ubuntu.com/ubuntu groovy-security/main amd64 grub-common amd64 2.04-1ubuntu35.6 404 Not Found [IP: 91.189.91.38 80] E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/g/grub2/grub-common_2.04-1ubuntu35.6_amd64.deb 404 Not Found [IP: 91.189.91.38 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? root@pop-os:~# apt-get update Get:1 http://ppa.launchpad.net/system76/pop/ubuntu groovy InRelease [18.0 kB] Hit:2 http://apt.pop-os.org/proprietary groovy InRelease Ign:3 http://us.archive.ubuntu.com/ubuntu groovy InRelease Ign:4 http://us.archive.ubuntu.com/ubuntu groovy-security InRelease Ign:5 http://us.archive.ubuntu.com/ubuntu groovy-updates InRelease Ign:6 http://us.archive.ubuntu.com/ubuntu groovy-backports InRelease Err:7 http://us.archive.ubuntu.com/ubuntu groovy Release 404 Not Found [IP: 91.189.91.38 80] Err:8 http://us.archive.ubuntu.com/ubuntu groovy-security Release 404 Not Found [IP: 91.189.91.38 80] Err:9 http://us.archive.ubuntu.com/ubuntu groovy-updates Release 404 Not Found [IP: 91.189.91.38 80] Err:10 http://us.archive.ubuntu.com/ubuntu groovy-backports Release 404 Not Found [IP: 91.189.91.38 80] Reading package lists... Done E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-backports Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:~# apt install os-prober Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: grub-common Suggested packages: multiboot-doc grub-emu xorriso desktop-base The following NEW packages will be installed: grub-common os-prober 0 upgraded, 2 newly installed, 0 to remove and 293 not upgraded. Need to get 1,873 kB/1,893 kB of archives. After this operation, 13.8 MB of additional disk space will be used. Do you want to continue? [Y/n] y WARNING: The following packages cannot be authenticated! grub-common os-prober Install these packages without verification? [y/N] y Ign:1 http://us.archive.ubuntu.com/ubuntu groovy-security/main amd64 grub-common amd64 2.04-1ubuntu35.6 Err:1 http://us.archive.ubuntu.com/ubuntu groovy-security/main amd64 grub-common amd64 2.04-1ubuntu35.6 404 Not Found [IP: 91.189.91.39 80] E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/g/grub2/grub-common_2.04-1ubuntu35.6_amd64.deb 404 Not Found [IP: 91.189.91.39 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? root@pop-os:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme0n1 259:0 0 931.5G 0 disk ├─nvme0n1p1 259:1 0 512M 0 part /boot/efi ├─nvme0n1p2 259:2 0 4G 0 part ├─nvme0n1p3 259:3 0 186.5G 0 part / ├─nvme0n1p4 259:4 0 724.5G 0 part └─nvme0n1p5 259:5 0 16G 0 part [SWAP] root@pop-os:~# df -h Filesystem Size Used Avail Use% Mounted on tmpfs 1.6G 2.0M 1.6G 1% /run /dev/nvme0n1p3 183G 166G 7.4G 96% / tmpfs 7.8G 0 7.8G 0% /dev/shm tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 4.0M 0 4.0M 0% /sys/fs/cgroup /dev/nvme0n1p1 511M 223M 289M 44% /boot/efi tmpfs 1.6G 932K 1.6G 1% /run/user/1000 root@pop-os:~# /boot -bash: /boot: Is a directory root@pop-os:~# cd /boot root@pop-os:/boot# ls config-5.8.0-7630-generic initrd.img-5.3.0-7648-generic System.map-5.8.0-7630-generic vmlinuz.old efi initrd.img-5.8.0-7630-generic vmlinuz initrd.img initrd.img.old vmlinuz-5.8.0-7630-generic root@pop-os:/boot# cd eti -bash: cd: eti: No such file or directory root@pop-os:/boot# cd efi root@pop-os:/boot/efi# ls 4a2f9aa47b7f63342878695c60133f2a EFI loader system76-firmware-update root@pop-os:/boot/efi# cd EFI root@pop-os:/boot/efi/EFI# ls BOOT GRUB Linux Pop_OS-73e85c22-ef7c-493b-94f1-36ac855d2480 Recovery-6906-C704 systemd root@pop-os:/boot/efi/EFI# cd Linux root@pop-os:/boot/efi/EFI/Linux# ls root@pop-os:/boot/efi/EFI/Linux# cd .. root@pop-os:/boot/efi/EFI# cd GRUB root@pop-os:/boot/efi/EFI/GRUB# ls grubx64.efi root@pop-os:/boot/efi/EFI/GRUB# cd .. root@pop-os:/boot/efi/EFI# ls BOOT GRUB Linux Pop_OS-73e85c22-ef7c-493b-94f1-36ac855d2480 Recovery-6906-C704 systemd root@pop-os:/boot/efi/EFI# cd BOOT root@pop-os:/boot/efi/EFI/BOOT# ls BOOTX64.EFI root@pop-os:/boot/efi/EFI/BOOT# mount /dev/nvme0n1p4 /mnt root@pop-os:/boot/efi/EFI/BOOT# cd /mnt root@pop-os:/mnt# ls bin boot dev efi etc home lib lib64 mnt opt proc root run sbin srv sys tmp usr var root@pop-os:/mnt# cd boot root@pop-os:/mnt/boot# ls grub initramfs-linux-fallback.img initramfs-linux.img intel-ucode.img vmlinuz-linux root@pop-os:/mnt/boot# cd grub root@pop-os:/mnt/boot/grub# ls fonts grub.cfg grubenv i386-pc locale themes x86_64-efi root@pop-os:/mnt/boot/grub# grub-mkconfig -o /boot/grub/grub/cfg Command 'grub-mkconfig' not found, but can be installed with: apt install grub-common root@pop-os:/mnt/boot/grub# apt install grub-common Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: os-prober Suggested packages: multiboot-doc grub-emu xorriso desktop-base The following NEW packages will be installed: grub-common os-prober 0 upgraded, 2 newly installed, 0 to remove and 293 not upgraded. Need to get 1,873 kB/1,893 kB of archives. After this operation, 13.8 MB of additional disk space will be used. Do you want to continue? [Y/n] y WARNING: The following packages cannot be authenticated! grub-common os-prober Install these packages without verification? [y/N] y Ign:1 http://us.archive.ubuntu.com/ubuntu groovy-security/main amd64 grub-common amd64 2.04-1ubuntu35.6 Err:1 http://us.archive.ubuntu.com/ubuntu groovy-security/main amd64 grub-common amd64 2.04-1ubuntu35.6 404 Not Found [IP: 91.189.91.39 80] E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/g/grub2/grub-common_2.04-1ubuntu35.6_amd64.deb 404 Not Found [IP: 91.189.91.39 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? root@pop-os:/mnt/boot/grub# cd /etc/apt root@pop-os:/etc/apt# ls apt.conf.d auth.conf.d preferences.d sources.list sources.list~ sources.list.d trusted.gpg trusted.gpg.d root@pop-os:/etc/apt# vi sources.list root@pop-os:/etc/apt# vi sources.list root@pop-os:/etc/apt# cd sources.list.d root@pop-os:/etc/apt/sources.list.d# ls pop-os-apps.sources system76-ubuntu-pop-groovy.list system.sources root@pop-os:/etc/apt/sources.list.d# mv system76-ubuntu-pop-groovy.list /root root@pop-os:/etc/apt/sources.list.d# apt-get update Ign:1 http://us.archive.ubuntu.com/ubuntu groovy InRelease Hit:2 http://apt.pop-os.org/proprietary groovy InRelease Ign:3 http://us.archive.ubuntu.com/ubuntu groovy-security InRelease Ign:4 http://us.archive.ubuntu.com/ubuntu groovy-updates InRelease Ign:5 http://us.archive.ubuntu.com/ubuntu groovy-backports InRelease Err:6 http://us.archive.ubuntu.com/ubuntu groovy Release 404 Not Found [IP: 91.189.91.39 80] Err:7 http://us.archive.ubuntu.com/ubuntu groovy-security Release 404 Not Found [IP: 91.189.91.39 80] Err:8 http://us.archive.ubuntu.com/ubuntu groovy-updates Release 404 Not Found [IP: 91.189.91.39 80] Err:9 http://us.archive.ubuntu.com/ubuntu groovy-backports Release 404 Not Found [IP: 91.189.91.39 80] Reading package lists... Done E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-backports Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# apt install grub-common Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: os-prober Suggested packages: multiboot-doc grub-emu xorriso desktop-base The following NEW packages will be installed: grub-common os-prober 0 upgraded, 2 newly installed, 0 to remove and 293 not upgraded. Need to get 1,873 kB/1,893 kB of archives. After this operation, 13.8 MB of additional disk space will be used. Do you want to continue? [Y/n] y WARNING: The following packages cannot be authenticated! grub-common os-prober Install these packages without verification? [y/N] y Ign:1 http://us.archive.ubuntu.com/ubuntu groovy-security/main amd64 grub-common amd64 2.04-1ubuntu35.6 Err:1 http://us.archive.ubuntu.com/ubuntu groovy-security/main amd64 grub-common amd64 2.04-1ubuntu35.6 404 Not Found [IP: 91.189.91.39 80] E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/g/grub2/grub-common_2.04-1ubuntu35.6_amd64.deb 404 Not Found [IP: 91.189.91.39 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? root@pop-os:/etc/apt/sources.list.d# ls pop-os-apps.sources system.sources root@pop-os:/etc/apt/sources.list.d# grep groovy * pop-os-apps.sources:Suites: groovy system.sources:Suites: groovy groovy-security groovy-updates groovy-backports root@pop-os:/etc/apt/sources.list.d# vi pop-os-apps.sources root@pop-os:/etc/apt/sources.list.d# vi system.sources root@pop-os:/etc/apt/sources.list.d# vi system.sources root@pop-os:/etc/apt/sources.list.d# vi system.sources root@pop-os:/etc/apt/sources.list.d# apt-get update E: Malformed entry 1 in sources file /etc/apt/sources.list.d/system.sources (Suite) E: The list of sources could not be read. root@pop-os:/etc/apt/sources.list.d# vi system.sources root@pop-os:/etc/apt/sources.list.d# apt-get update Ign:1 http://us.archive.ubuntu.com/ubuntu groovy InRelease Ign:2 http://us.archive.ubuntu.com/ubuntu groovy-security InRelease Ign:3 http://us.archive.ubuntu.com/ubuntu groovy-updates InRelease Ign:4 http://us.archive.ubuntu.com/ubuntu groovy-backports InRelease Err:5 http://us.archive.ubuntu.com/ubuntu groovy Release 404 Not Found [IP: 91.189.91.38 80] Err:6 http://us.archive.ubuntu.com/ubuntu groovy-security Release 404 Not Found [IP: 91.189.91.38 80] Err:7 http://us.archive.ubuntu.com/ubuntu groovy-updates Release 404 Not Found [IP: 91.189.91.38 80] Err:8 http://us.archive.ubuntu.com/ubuntu groovy-backports Release 404 Not Found [IP: 91.189.91.38 80] Hit:9 http://apt.pop-os.org/proprietary groovy InRelease Reading package lists... Done E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-backports Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# apt-update apt-update: command not found root@pop-os:/etc/apt/sources.list.d# sudo apt-update sudo: apt-update: command not found root@pop-os:/etc/apt/sources.list.d# apt update Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://us.archive.ubuntu.com/ubuntu groovy InRelease Ign:3 http://us.archive.ubuntu.com/ubuntu groovy-security InRelease Ign:4 http://us.archive.ubuntu.com/ubuntu groovy-updates InRelease Ign:5 http://us.archive.ubuntu.com/ubuntu groovy-backports InRelease Err:6 http://us.archive.ubuntu.com/ubuntu groovy Release 404 Not Found [IP: 91.189.91.39 80] Err:7 http://us.archive.ubuntu.com/ubuntu groovy-security Release 404 Not Found [IP: 91.189.91.39 80] Err:8 http://us.archive.ubuntu.com/ubuntu groovy-updates Release 404 Not Found [IP: 91.189.91.39 80] Err:9 http://us.archive.ubuntu.com/ubuntu groovy-backports Release 404 Not Found [IP: 91.189.91.39 80] Reading package lists... Done E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu groovy-backports Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# ls pop-os-apps.sources system.sources root@pop-os:/etc/apt/sources.list.d# mv system.sources /root root@pop-os:/etc/apt/sources.list.d# mv pop-os-apps.sources /root root@pop-os:/etc/apt/sources.list.d# apt update Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date. root@pop-os:/etc/apt/sources.list.d# apt install grub-common Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package grub-common root@pop-os:/etc/apt/sources.list.d# sudo apt install grub-common Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package grub-common root@pop-os:/etc/apt/sources.list.d# vi /etc/apt/sources.list root@pop-os:/etc/apt/sources.list.d# apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 63C46DF0140D738961429F4E204DD8AEC33A7AFF Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)). Executing: /tmp/apt-key-gpghome.P8l3nWvC6b/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 63C46DF0140D738961429F4E204DD8AEC33A7AFF gpg: key 204DD8AEC33A7AFF: "Pop OS (ISO Signing Key) " not changed gpg: Total number processed: 1 gpg: unchanged: 1 root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb http://apt.pop-os.org/proprietary $(lsb_release -cs) main" Repository: 'deb http://apt.pop-os.org/proprietary groovy main' Description: Archive for codename: groovy components: main More info: http://apt.pop-os.org/proprietary Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_proprietary-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_proprietary-groovy.list Get:1 http://apt.pop-os.org/proprietary groovy InRelease [8,438 B] Get:2 http://apt.pop-os.org/proprietary groovy/main amd64 Packages [6,112 B] Get:3 http://apt.pop-os.org/proprietary groovy/main all Packages [608 B] Fetched 15.2 kB in 1s (13.4 kB/s) Reading package lists... Done root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb http://apt.pop-os.org/release $(lsb_release -cs) main" Repository: 'deb http://apt.pop-os.org/release groovy main' Description: Archive for codename: groovy components: main More info: http://apt.pop-os.org/release Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_release-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_release-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Err:3 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb [arch=amd64] http://apt.pop-os.org/staging/master $(lsb_release -cs) main" Repository: 'deb [arch=amd64] http://apt.pop-os.org/staging/master groovy main' Description: Archive for codename: groovy components: main More info: http://apt.pop-os.org/staging/master Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_staging_master-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_staging_master-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Ign:3 http://apt.pop-os.org/staging/master groovy InRelease Err:4 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:5 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb http://apt.pop-os.org/staging-proprietary $(lsb_release -cs) main" Repository: 'deb http://apt.pop-os.org/staging-proprietary groovy main' Description: Archive for codename: groovy components: main More info: http://apt.pop-os.org/staging-proprietary Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_staging-proprietary-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_staging-proprietary-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Get:3 http://apt.pop-os.org/staging-proprietary groovy InRelease [8,438 B] Ign:4 http://apt.pop-os.org/staging/master groovy InRelease Err:5 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:6 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Get:7 http://apt.pop-os.org/staging-proprietary groovy/main all Packages [608 B] Get:8 http://apt.pop-os.org/staging-proprietary groovy/main amd64 Packages [6,112 B] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb [arch=amd64] http://apt.pop-os.org/staging-ubuntu/master $(lsb_release -cs) main" Repository: 'deb [arch=amd64] http://apt.pop-os.org/staging-ubuntu/master groovy main' Description: Archive for codename: groovy components: main More info: http://apt.pop-os.org/staging-ubuntu/master Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_staging-ubuntu_master-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_staging-ubuntu_master-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Hit:3 http://apt.pop-os.org/staging-proprietary groovy InRelease Ign:4 http://apt.pop-os.org/staging-ubuntu/master groovy InRelease Ign:5 http://apt.pop-os.org/staging/master groovy InRelease Err:6 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:7 http://apt.pop-os.org/staging-ubuntu/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:8 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging-ubuntu/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb http://apt.pop-os.org/ubuntu $(lsb_release -cs) main multiverse restricted universe" Repository: 'deb http://apt.pop-os.org/ubuntu groovy universe restricted main multiverse' Description: Archive for codename: groovy components: universe,restricted,main,multiverse More info: http://apt.pop-os.org/ubuntu Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Hit:3 http://apt.pop-os.org/staging-proprietary groovy InRelease Ign:4 http://apt.pop-os.org/staging-ubuntu/master groovy InRelease Ign:5 http://apt.pop-os.org/staging/master groovy InRelease Ign:6 http://apt.pop-os.org/ubuntu groovy InRelease Err:7 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:8 http://apt.pop-os.org/staging-ubuntu/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:9 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:10 http://apt.pop-os.org/ubuntu groovy Release 404 Not Found [IP: 18.64.119.122 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging-ubuntu/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb http://apt.pop-os.org/ubuntu $(lsb_release -cs)-security main multiverse restricted universe" Repository: 'deb http://apt.pop-os.org/ubuntu groovy-security multiverse main restricted universe' Description: Archive for codename: groovy-security components: multiverse,main,restricted,universe More info: http://apt.pop-os.org/ubuntu Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Hit:3 http://apt.pop-os.org/staging-proprietary groovy InRelease Ign:4 http://apt.pop-os.org/staging-ubuntu/master groovy InRelease Ign:5 http://apt.pop-os.org/staging/master groovy InRelease Ign:6 http://apt.pop-os.org/ubuntu groovy InRelease Ign:7 http://apt.pop-os.org/ubuntu groovy-security InRelease Err:8 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:9 http://apt.pop-os.org/staging-ubuntu/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:10 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:11 http://apt.pop-os.org/ubuntu groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:12 http://apt.pop-os.org/ubuntu groovy-security Release 404 Not Found [IP: 18.64.119.122 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging-ubuntu/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb http://apt.pop-os.org/ubuntu $(lsb_release -cs)-updates main multiverse restricted universe" Repository: 'deb http://apt.pop-os.org/ubuntu groovy-updates universe restricted main multiverse' Description: Archive for codename: groovy-updates components: universe,restricted,main,multiverse More info: http://apt.pop-os.org/ubuntu Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Hit:3 http://apt.pop-os.org/staging-proprietary groovy InRelease Ign:4 http://apt.pop-os.org/staging-ubuntu/master groovy InRelease Ign:5 http://apt.pop-os.org/staging/master groovy InRelease Ign:6 http://apt.pop-os.org/ubuntu groovy InRelease Ign:7 http://apt.pop-os.org/ubuntu groovy-security InRelease Ign:8 http://apt.pop-os.org/ubuntu groovy-updates InRelease Err:9 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:10 http://apt.pop-os.org/staging-ubuntu/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:11 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:12 http://apt.pop-os.org/ubuntu groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:13 http://apt.pop-os.org/ubuntu groovy-security Release 404 Not Found [IP: 18.64.119.122 80] Err:14 http://apt.pop-os.org/ubuntu groovy-updates Release 404 Not Found [IP: 18.64.119.122 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging-ubuntu/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb http://apt.pop-os.org/ubuntu $(lsb_release -cs)-backports main multiverse restricted universe" Repository: 'deb http://apt.pop-os.org/ubuntu groovy-backports main multiverse universe restricted' Description: Archive for codename: groovy-backports components: main,multiverse,universe,restricted More info: http://apt.pop-os.org/ubuntu Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Hit:3 http://apt.pop-os.org/staging-proprietary groovy InRelease Ign:4 http://apt.pop-os.org/staging-ubuntu/master groovy InRelease Ign:5 http://apt.pop-os.org/staging/master groovy InRelease Ign:6 http://apt.pop-os.org/ubuntu groovy InRelease Ign:7 http://apt.pop-os.org/ubuntu groovy-security InRelease Ign:8 http://apt.pop-os.org/ubuntu groovy-updates InRelease Ign:9 http://apt.pop-os.org/ubuntu groovy-backports InRelease Err:10 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:11 http://apt.pop-os.org/staging-ubuntu/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:12 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:13 http://apt.pop-os.org/ubuntu groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:14 http://apt.pop-os.org/ubuntu groovy-security Release 404 Not Found [IP: 18.64.119.122 80] Err:15 http://apt.pop-os.org/ubuntu groovy-updates Release 404 Not Found [IP: 18.64.119.122 80] Err:16 http://apt.pop-os.org/ubuntu groovy-backports Release 404 Not Found [IP: 18.64.119.122 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging-ubuntu/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-backports Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# add-apt-repository "deb http://apt.pop-os.org/ubuntu $(lsb_release -cs)-proposed main multiverse restricted universe" Repository: 'deb http://apt.pop-os.org/ubuntu groovy-proposed universe multiverse restricted main' Description: Archive for codename: groovy-proposed components: universe,multiverse,restricted,main More info: http://apt.pop-os.org/ubuntu Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_apt_pop-os_org_ubuntu-groovy.list Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Hit:3 http://apt.pop-os.org/staging-proprietary groovy InRelease Ign:4 http://apt.pop-os.org/staging-ubuntu/master groovy InRelease Ign:5 http://apt.pop-os.org/staging/master groovy InRelease Ign:6 http://apt.pop-os.org/ubuntu groovy InRelease Ign:7 http://apt.pop-os.org/ubuntu groovy-security InRelease Ign:8 http://apt.pop-os.org/ubuntu groovy-updates InRelease Ign:9 http://apt.pop-os.org/ubuntu groovy-backports InRelease Ign:10 http://apt.pop-os.org/ubuntu groovy-proposed InRelease Err:11 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:12 http://apt.pop-os.org/staging-ubuntu/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:13 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:14 http://apt.pop-os.org/ubuntu groovy Release 404 Not Found [IP: 18.64.119.122 80] Err:15 http://apt.pop-os.org/ubuntu groovy-security Release 404 Not Found [IP: 18.64.119.122 80] Err:16 http://apt.pop-os.org/ubuntu groovy-updates Release 404 Not Found [IP: 18.64.119.122 80] Err:17 http://apt.pop-os.org/ubuntu groovy-backports Release 404 Not Found [IP: 18.64.119.122 80] Err:18 http://apt.pop-os.org/ubuntu groovy-proposed Release 404 Not Found [IP: 18.64.119.122 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging-ubuntu/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-backports Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-proposed Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# apt-get update Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Hit:3 http://apt.pop-os.org/staging-proprietary groovy InRelease Ign:4 http://apt.pop-os.org/staging-ubuntu/master groovy InRelease Ign:5 http://apt.pop-os.org/staging/master groovy InRelease Ign:6 http://apt.pop-os.org/ubuntu groovy InRelease Ign:7 http://apt.pop-os.org/ubuntu groovy-security InRelease Ign:8 http://apt.pop-os.org/ubuntu groovy-updates InRelease Ign:9 http://apt.pop-os.org/ubuntu groovy-backports InRelease Ign:10 http://apt.pop-os.org/ubuntu groovy-proposed InRelease Err:11 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 52.222.191.37 80] Err:12 http://apt.pop-os.org/staging-ubuntu/master groovy Release 404 Not Found [IP: 52.222.191.37 80] Err:13 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 52.222.191.37 80] Err:14 http://apt.pop-os.org/ubuntu groovy Release 404 Not Found [IP: 52.222.191.37 80] Err:15 http://apt.pop-os.org/ubuntu groovy-security Release 404 Not Found [IP: 52.222.191.37 80] Err:16 http://apt.pop-os.org/ubuntu groovy-updates Release 404 Not Found [IP: 52.222.191.37 80] Err:17 http://apt.pop-os.org/ubuntu groovy-backports Release 404 Not Found [IP: 52.222.191.37 80] Err:18 http://apt.pop-os.org/ubuntu groovy-proposed Release 404 Not Found [IP: 52.222.191.37 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging-ubuntu/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-backports Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-proposed Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# sudo apt install grub-common Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package grub-common root@pop-os:/etc/apt/sources.list.d# apt-get update Hit:1 http://apt.pop-os.org/proprietary groovy InRelease Ign:2 http://apt.pop-os.org/release groovy InRelease Hit:3 http://apt.pop-os.org/staging-proprietary groovy InRelease Ign:4 http://apt.pop-os.org/staging-ubuntu/master groovy InRelease Ign:5 http://apt.pop-os.org/staging/master groovy InRelease Ign:6 http://apt.pop-os.org/ubuntu groovy InRelease Ign:7 http://apt.pop-os.org/ubuntu groovy-security InRelease Ign:8 http://apt.pop-os.org/ubuntu groovy-updates InRelease Ign:9 http://apt.pop-os.org/ubuntu groovy-backports InRelease Ign:10 http://apt.pop-os.org/ubuntu groovy-proposed InRelease Err:11 http://apt.pop-os.org/release groovy Release 404 Not Found [IP: 52.222.191.9 80] Err:12 http://apt.pop-os.org/staging-ubuntu/master groovy Release 404 Not Found [IP: 52.222.191.9 80] Err:13 http://apt.pop-os.org/staging/master groovy Release 404 Not Found [IP: 52.222.191.9 80] Err:14 http://apt.pop-os.org/ubuntu groovy Release 404 Not Found [IP: 52.222.191.9 80] Err:15 http://apt.pop-os.org/ubuntu groovy-security Release 404 Not Found [IP: 52.222.191.9 80] Err:16 http://apt.pop-os.org/ubuntu groovy-updates Release 404 Not Found [IP: 52.222.191.9 80] Err:17 http://apt.pop-os.org/ubuntu groovy-backports Release 404 Not Found [IP: 52.222.191.9 80] Err:18 http://apt.pop-os.org/ubuntu groovy-proposed Release 404 Not Found [IP: 52.222.191.9 80] Reading package lists... Done E: The repository 'http://apt.pop-os.org/release groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging-ubuntu/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/staging/master groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-backports Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://apt.pop-os.org/ubuntu groovy-proposed Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. root@pop-os:/etc/apt/sources.list.d# apps Command 'apps' not found, did you mean: command 'apxs' from deb apache2-dev (2.4.46-1ubuntu1.2) command 'a2ps' from deb a2ps (1:4.14-5) command 'apbs' from deb apbs (3.0.0+dfsg1-3) command 'paps' from deb paps (0.6.8-7.1) Try: apt install root@pop-os:/etc/apt/sources.list.d#