Re: Message from grub2-install

[Stefan Misch]

Hi Michael,

I have to admit, I'm not very proficient at grub. I just answered your 
first mail this morning because the 2048 rang the "Advanced Sector 
Format" bell in my head.

Anyway, I did some digging and this is what I found: 
http://www.gnu.org/software/grub/manual/html_node/BIOS-installation.html#BIOS-installation

So in fact, the MBR stays at 512 Bytes because that's the standard for a 
traditional partitioning system. That is where the actual boot loader 
is. But the core.img-file is indeed placed between the boot loader and 
the first partition. Usually operatings systems begin at Sector 63 
leaving roughly 31k of space available. With the new drives this gets 
pushed back even further to 2048.

What is the output of "sudo fdisk -ul /dev/sda" on the machine where 
you're having these troubles?

Regards,
Stefan

Am 10.03.2012 13:37, schrieb Michael D. Setzer II:
> This is the message that is returned when trying to install grub2
> on a system that actually already is running grub2 on a Fedora 16
> machine that was upgrade.
>
> #grub2-install --recheck /dev/sda
> /sbin/grub2-setup: warn: Your embedding area is unusually small.
> core.img won't fit in it..
> /sbin/grub2-setup: warn: Embedding is not possible.  GRUB can
> only be installed in this setup by using blocklists.  However,
> blocklists are UNRELIABLE and their use is discouraged..
> /sbin/grub2-setup: error: will not proceed with blocklists.
>
> On some machines, where I moved the first partition from 63 to
> 2048 the process runs with no error. In looking at the hex code of
> the process it seems to be the regular mbr, but then it is followed
> by the core.img file after that?
>
>
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