1

I'm trying to boot Ubuntu live ISO9660 image with GRUB 2.04 using these instructions. It is failing to boot with GRUB error error: unknown filesystem, even though I can browse as well the boot partition as the looped image filesystem from GRUB. I'm using the following commands to boot:

set isofile="/boot/ubuntu-18.04.4-desktop-amd64.iso"
loopback loop $isofile
linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile noprompt noeject
initrd (loop)/casper/initrd.lz

I've also tried a few different live ISOs of different distros with no success. What am I doing wrong? Were there any changes recently introduced in GRUB that require some changes to the above commands?

Improve this question
3
  • 1
    There is a known bug, that affects boot Ubuntu live ISO9660 image with GRUB 2.04. Some alteratives/workarounds are discussed in comments to the bug report.
    – sudodus
    Mar 17, 2020 at 16:31
  • 1
    Thank you for your answer. Unfortunately it is stated in the comments that BIOS setups work and only UEFI ones doesn't (I have a BIOS one) and they also don't mention the "unknown filesystem" bug. However, they link to a more similar recent GRUB bug report.
    – drws
    Apr 3, 2020 at 2:46
  • Thanks for sharing the link to that recent grub bug report.
    – sudodus
    Apr 3, 2020 at 8:13

0

Reset to default

You must log in to answer this question.

Browse other questions tagged .