Re: [Bug-xorriso] Mountable ISO and GRUB2

[Andrei Borzenkov]

On Fri, Dec 23, 2016 at 3:09 PM, Carlo Caione <address@hidden> wrote:
...
> What we want to achieve is having the ISO image with a mountable
> partition (starting from 512-block 0, to cover the entire CD) in both
> MBR and GPT to have the maximum compatibility with BIOS and UEFI
> systems and be able to mount the partition from Linux itself.
> Basically what mjg is suggesting here
> https://mjg59.dreamwidth.org/11285.html but using GRUB2 for BIOS and
> UEFI booting.
>

Strictly speaking this layout violates UEFI specs that explicitly says
"All data stored on the volume must be stored between the First Usable
LBA through Last Usable LBA, and only the data structures defined by
UEFI to manage partitions may reside
outside of the usable space".

> Any hint how to achieve this?
>

Why do you need it to be partition? grub is happy to access ISO via
non-partitioned device.