iso: print GRUB snapshot recovery after bos-update

Recovery is reboot → GRUB “snapshots” submenu. snapper rollback
does not change what GRUB boots (rootflags=subvol=@). Same wording
in README Recovery and docs/hardware.md.
This commit is contained in:
Breadway 2026-08-16 00:48:25 +08:00
parent f3d6c55234
commit 43c0a5e2b5
3 changed files with 25 additions and 16 deletions

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@ -19,14 +19,18 @@ A VM without `/dev/dri` gets a notification only.
## Recovery
An update that breaks the system is recovered from the **GRUB "snapshots"
submenu** (grub-btrfs), not `snapper rollback`.
An update that breaks the system is recovered by **reboot → GRUB
“snapshots” submenu** (grub-btrfs). `snapper rollback` will not change
what GRUB boots (`rootflags=subvol=@`).
BOS GRUB pins `rootflags=subvol=@`. `snapper rollback` swaps the default
subvolume; the installed `grub.cfg` will still boot `@`. Pick the grub-btrfs
entry so the kernel command line matches the snapshot you want. Bakery
desktop apps live under `/usr/local` on `@`, so those same snapshots
include them.
`snapper rollback` swaps the default subvolume; the installed `grub.cfg`
still boots `@`. Pick the grub-btrfs entry so the kernel command line
matches the snapshot you want.
BOS Settings → Snapshots lists snapshot number, date, and description so
you know which GRUB entry to pick. It does not roll the running root back
in place. Bakery desktop apps live under `/usr/local` on `@`, so those
same snapshots include them.
If the system will not boot (lost EFI entry / broken GRUB), boot the live
ISO and run `sudo bos-rescue`. It mounts `@` + the ESP and offers the same