Error occurred when booting from caine10.0.iso

[Margular]

You can get the iso here: https://www.caine-live.net/page5/page5.html

I use makeUSB.sh to get my usb multibootable, and copy the iso to isos/ directory, then copy ubuntu-18.04.1-desktop-amd64.iso to isos/ as well for compare.

And for the purpose to make caine bootable, I mkdir in mbusb.d/caine.d, then copy the config of ubuntu in this dir: cp ../ubuntu.d/desktop-generic.cfg ./caine.cfg, and then modify to:

for isofile in $isopath/caine*.iso; do
if [ -e "$isofile" ]; then
regexp --set=isoname "$isopath/(.*)" "$isofile"
submenu "$isoname (loopback.cfg) ->" "$isofile" {
iso_path="$2"
export iso_path
search --set=root --file "$iso_path"
loopback loop "$iso_path"
root=(loop)
configfile /boot/grub/loopback.cfg
loopback --delete loop
}
fi
done

but it will cause some error occurred like this:

error screenshot here

Actually, ubuntu works! but caine is based on ubuntu, I don't know why caine can not work

[aguslr]

Hi @Margular! Sorry for taking so long to reply.

Notice how, inside the ISO file, /boot/grub/loopback.cfg has the boot parameter file=/cdrom/preseed/custom.seed which expects the CD to be mounted at /cdrom. Even if we modify this parameter so it looks in /preseed/custom.feed instead, we have the script /scripts/casper-premount trying to mount the CD, therefore the booting process fails.

It looks like they copied the loopback.cfg and grub.cfg files from Ubuntu but disabled (or didn't enable) the appropriate configuration to boot from a ISO file.