Le 09/04/2017 à 10:52, Andrei Borzenkov a écrit :
09.04.2017 11:14, Pascal Hambourg пишет:
In some cases I would need to force installation of GRUB's boot and core
images into a specific location on the drive instead of letting
grub-install decide automatically.
For example :
- install the boot image in the first sector of an unformatted partition
- install the core image in the second and next sectors of that partition.
Is this possible through any undocumented options or internal commands ?
No. The most straightforward workaround is to create loop device on top
of partition and create partition table inside with at least one
partition and suitable post-MBR gap. Then you will be able to install on
/dev/loopX. You may zap partition table afterwards to avoid confusion.
Thanks for your answer. I did not think that GRUB would support
installing on a virtual device such as a loop device.
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 that
proper booting would require that the boot image looks at the partition
offset+1 instead.
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