Hi,
I have a system as a disk image. It can be booted directly from an USB
stick both via legacy BIOS and EFI. I wanted the same image to be usable
on a CD.
For EFI boot it should be straightforward – use the disk image as
a hard-disk-emulation El-Torito EFI boot image. I have done that with
other EFI boot loaders and it worked right.
With GRUB there is a problem – it is unable to find the boot partition.
In rescue mode I can see only:
(hd0) (cd0)
however, I would expect too see (hd0,msdos1) too – with the first
partition of the El-Torito image.
Is it a bug? Am I doing something wrong?
I made a workaround by using GRUB loopback in the embedded config for
the EFI loader:
echo "starting grub"
search.fs_uuid 8101-917C root
set prefix=($root)/grub
configfile $prefix/go_normal.cfg
echo "boot partition not found falling back to loopback device"
search.fs_uuid 2013-11-11-18-32-41-96 cd
loopback loop ($cd)/pld-nr-32.img
set root=(loop,msdos1)
set prefix=($root)/grub
It works, but I don't like this. GRUB should be able to see the El-Torito
contents, shouldn't it?
Greets,
Jacek
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