Restored a snapshot, now system won't boot. (btrfs)

General system Newbie
1

Tried using Waydroid thru Wayfire (I installed the zen kernel), didn’t work out, so I decided it’d be a great idea to restore a snapshot from yesterday, and now only / mounts. /home doesn’t have snapshotting on, and /EFI is FAT32 obviously.

I’ve chrooted into my system. Now how do I undo the wreckage I’ve caused? DDGing isn’t helping.

(Please move if this post is in the wrong category)

2

When using systemd-boot, after restoring a / snapshot, you need to arch-chroot in and run reinstall-kernels

  • Make sure your EFI partition is mounted before running the command
  • You may need to also do some manual cleanup in /efi
2 Likes
3

I already mounted /efi.

I use systemd-boot.

I did your command , and now I have 3 entries ignoring fallback ones (what purpose do they serve anyway?)

Linux 6.4.3
Linux 6.4.2
Linux Zen 6.4.3

I did install Zen at one point so that’s expected.

I went into /efi/<some really long random string>/and deleted all of the non relevant entries.

Then, since my kernel is out of date, I updated my system, and all is now well.

Thank you.

4

fallback entries include more than the minimum needed to boot. They are useful in a couple of scenarios:

  • You change your hardware and or configuration
  • Something happens causing something to missing from the normal boot image

You can disable fallback images in the config if you don’t want them.

1 Like
5

Thanks for explaining.

I’m assuming the whole reason this happened is because I rolled back too far, far enough to the point where the ESP didn’t make sense to the system? Or is it the other way around? Or smth else?

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