Re: Force location of GRUB's boot and core images ?

[Xen]

Pascal Hambourg schreef op 09-04-2017 13:44:

> I just tried it. grub-install executed without any error, but
> chainloading the partition boot sector leaves me with a blank screen
> after the "boot" command. bootinfoscript reports that grub2 is
> installed in the boot sector of the partition and looks at sector 1 of
> the same hard disk (which contains the GPT header) for core.img.

I guess you mean that boot.img will have (contain) an offset relative to 
what it thinks is the entire disk (that was actually a partition 
loopback mounted to appear as a single disk) and so upon activation will 
not know that it was installed on a partition and will not know how to 
use a relative offset from where boot.img was installed?

> I guess that proper booting would require that the boot image looks at
> the partition offset+1 instead.

Which it can't know because it thought it was sitting on a complete 
disk, instead, unless it uses relative offsets.

Right.