Kernel squashfs driver fails with "unable to read xattr id index table"
when the squashfs contains POSIX ACL xattrs (system.posix_acl_*) written
by mksquashfs as unrecognised entries. This caused every built ISO to
drop to an initramfs shell at boot.
Add -no-xattrs to mksquashfs options so xattrs are stripped at build
time. xattrs are not needed in a live read-only rootfs.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
ee36e3c711