Ubuntu
casper package

  1. Bug #1905491
  2. Comment #7

Comment 7 for bug 1905491

Revision history for this message
iaincc (iain-clapham) wrote :

Wht are all New distro ISO files (Oct 2020 on) now created with GUID Partition Tables. ??????

These work fine when used to create USB Boot Sticks for new Secure Boot systems,

 HOWEVER these ISOs FAIL to load on many BIOS machines. ( GRUB ERROR - Command GRUB_PLATFORM missing )

SOLUTION
=========
mount the GUID based iso on /dev/loopX using Mount Disk Image.
sudo gdisk /dev/loopX
Recovery option (r) convert to MBR (g)
then use Startup Disk or Gnome Disk or dd to create an MBR based USB Stick

Tested with ubuntustudio-20.10-dvd-amd64.iso and xubuntu-20.10-dvd-amd64.iso