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Re: Cannot find core.img on a 3Tb GPT usb disk


From: Chris Murphy
Subject: Re: Cannot find core.img on a 3Tb GPT usb disk
Date: Mon, 12 Aug 2013 09:02:56 -0600

On Aug 12, 2013, at 7:42 AM, address@hidden wrote:

> 
> Sector size (logical/physical): 4096B/4096B

This could be a problem for any BIOS that doesn't explicitly support a 4KB 
physical sector.

> 
> "Grub2 (v1.99) is installed in the MBR of /dev/sdc and looks at sector 2048 
> of the same hard drive for core.img, but core.img can not be found at this 
> location."

Hmm, something doesn't seem right. I don't expect LBA 2048 to be used as as the 
start sector for a first sector on a 4Kn disk because it offsets the start 8MB 
in; I think it uses LBA 6 as the first sector on 4Kn drives.

This is an old version of GRUB2, ~ 2 years old and may indicate an old version 
of parted. Aside from whether this disk can even be supported as a boot disk at 
all by the computer's firmware.


Chris Murphy


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