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iso: add bos-rescue, first-boot probe, optional Calamares refresh

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Live-ISO bos-rescue finds the installed btrfs @ and ESP, then offers
arch-chroot and/or the same GRUB NVRAM + --removable sequence as
post-install.sh. Recovery is grub-btrfs or this reinstall — GRUB pins
rootflags=subvol=@.

bos-first-boot runs once after the first graphical login: NVIDIA offer
file + notify (no driver install), VM-without-GL notify, HiDPI hint
file (never rewrites monitors.json).

Re-enable the Calamares packages module as a refresh-only step with
skip_if_no_internet and ignore_update_db_error so offline installs
cannot abort on pacman -Sy.
This commit is contained in:
Breadway 2026-08-15 23:59:38 +08:00
parent fd385bafae
commit 744f18cd90
11 changed files with 838 additions and 18 deletions
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9
README.md
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@ -360,14 +360,15 @@ not shipped.
**The system won't boot (broken GRUB / lost EFI entry):**
1. Boot the BOS ISO and open a terminal (`SUPER+Return`).
2. Mount the installed root and EFI, then chroot:
2. Run `sudo bos-rescue`. It finds the installed btrfs `@` and the ESP,
prints the devices it will use, and asks `YES` before writing. It can
`arch-chroot` and/or reinstall GRUB with the same sequence the
installer uses (NVRAM + `--removable` + `grub-mkconfig`).
3. Manual equivalent, if you would rather type it:
```sh
mount -o subvol=@ /dev/sdXN /mnt
mount /dev/sdXP /mnt/boot/efi # the EFI partition
arch-chroot /mnt
```
3. Reinstall the bootloader (the same sequence the installer uses):
```sh
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=BOS --recheck
grub-install --target=x86_64-efi --efi-directory=/boot/efi --removable --recheck
grub-mkconfig -o /boot/grub/grub.cfg