Remaining problem could be with SeaBIOS. Copying here my question to OFTC #virt
Doing some GRUB bios-mode boot testing with qemu/x86_64. Attached 2 IDE devices, a small HDD (file with mbr and 2 partitions) and a CDROM (iso file). If SeaBIOS boots the CD GRUB can see both devices ("(cd) (hd0)") but if SeaBIOS boots the HDD GRUB can only see the HD ("(hd0)"). Is this a SeaBios issue or something about how the guest is (mis)configured -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1948525 Title: Alters Performance options > Cache mode causing start failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1948525/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs