The archiso git repo doesn't ship the hooks as standalone files, and
ALARM has no archiso package. Write the hooks directly in the entrypoint
with the correct three-phase structure:
- run_earlyhook: modprobe squashfs/overlay/iso9660/loop/vfat before udev
- run_hook: parse archisolabel/archisobasedir from /proc/cmdline, set
mount_handler="archiso_mount_handler"
- archiso_mount_handler: find ISO by label (fallback to TYPE=iso9660),
mount it, mount squashfs at arch/$(uname -m)/airootfs.sfs, set up
tmpfs cowspace, mount overlay to /new_root
install hook: add all required modules (squashfs, overlay, iso9660,
loop, vfat, nls_*) and binaries (blkid, losetup, sleep, uname).
Each mount step prints its progress and bails with a clear error message
on failure so boot panics are diagnosable.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
nmemmertandClaude Sonnet 4.6
4cda708cc2