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iso: print GRUB snapshot recovery after bos-update

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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.
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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
README.md
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@ -264,7 +264,7 @@ also get live systemd status + Start/Stop/Restart/Logs.
| Packages | `bakery` installed list + updates, pacman system update |
| AUR | Search via `yay`; installing opens a terminal (AUR build scripts need review) |
| Firmware | `fwupd` device list + updates |
| Snapshots | `snapper` list / boot-into (grub-btrfs) / delete |
| Snapshots | `snapper` list (number / date / description); reboot to pick in GRUB (grub-btrfs); delete |
Source and build live in the [bos-settings](https://git.breadway.dev/Breadway/bos-settings)
repo, not here.
@ -382,15 +382,16 @@ until `dl.breadway.dev/arch` exists).
## Recovery
**An update broke something (system still boots):** open BOS Settings →
Snapshots and pick a snapshot to boot, **or** choose one from the **GRUB
“snapshots” submenu** (grub-btrfs) at boot, then reboot into it.
**An update broke something (system still boots):** reboot → **GRUB
“snapshots” submenu** (grub-btrfs), then boot that entry.
Do **not** run `snapper rollback` as the default recovery step. BOS GRUB
pins `rootflags=subvol=@`, so a snapper-swapped default subvolume is not
what the installed grub.cfg will boot next. Use the grub-btrfs entry so the
kernel command line matches the snapshot you want. Details:
[docs/hardware.md](docs/hardware.md).
BOS Settings → Snapshots lists each snapshot’s number, date, and
description so you know which GRUB entry to pick. It does not roll the
running root back in place.
Do **not** run `snapper rollback`. BOS GRUB pins `rootflags=subvol=@`, so
a snapper-swapped default subvolume is not what the installed grub.cfg
will boot next. Details: [docs/hardware.md](docs/hardware.md).
A/B root swapping (SteamOS-style) is a **future** idea in DESIGN.md — it is
not shipped.