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From: "Yoshinori K. Okuji" <okuji@enbug.org>
Organization: enbug.org
To: The development of GRUB 2 <grub-devel@gnu.org>
Date: Thu, 7 Oct 2004 11:26:37 +0200
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Subject: Re: [ppc patch] Old World Mac booting
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On Wednesday 06 October 2004 15:58, Hollis Blanchard wrote:
> I can't look right now, but does x86 GRUB need to use a block list
> for an early stage? If so, could someone point me to the structures
> used? I'd like to use that as my model...

You can see the details from the comments at the bottom of 
boot/i386/pc/diskboot.S. It is the almost same as the so-called 
"blocklist" format. It specifies a list of blocks, and each block 
consists of a start sector and the number of contiguous sectors. One 
sector is 512-byte.

Okuji