0
rated 0 times
[
0]
[
0]
/ answers: 1 / hits: 909
/ 2 Years ago, tue, december 14, 2021, 1:41:24
I have inadvertently deleted the key that allows for updating of the system, and now when I try updating using sudo apt update I get the following terminal output
Get:1 file:/var/lib/preinstalled-pool focal InRelease
Ign:1 file:/var/lib/preinstalled-pool focal InRelease
Get:2 file:/var/lib/preinstalled-pool focal Release [3,949 B]
Get:2 file:/var/lib/preinstalled-pool focal Release [3,949 B]
Get:3 file:/var/lib/preinstalled-pool focal Release.gpg [455 B]
Get:3 file:/var/lib/preinstalled-pool focal Release.gpg [455 B]
Ign:3 file:/var/lib/preinstalled-pool focal Release.gpg
Hit:4 http://archive.ubuntu.com/ubuntu focal InRelease
Get:5 http://security.ubuntu.com/ubuntu focal-security InRelease [109 kB]
Hit:6 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ InRelease
Hit:7 http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu focal InRelease
Get:8 http://archive.neon.kde.org/user focal InRelease [166 kB]
Get:9 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:10 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [844 kB]
Get:11 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [750 kB]
Reading package lists... Done
W: GPG error: file:/var/lib/preinstalled-pool focal Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E5231016A6508C17
E: The repository 'file:/var/lib/preinstalled-pool focal Release' is not signed.
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.
How do I reinstall the public key, given that the error message says it is unavailable? FWIW I have an additional laptop with the same OS installed, so perhaps I could copy the key from this?
More From » updates
