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Re: Faulty BIOS or GRUB issue (USB Stick won't boot)


From: Daniel Mierswa
Subject: Re: Faulty BIOS or GRUB issue (USB Stick won't boot)
Date: Wed, 30 Sep 2009 21:10:51 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20090930 Thunderbird/3.0pre

On 30.09.2009 10:26, James Courtier-Dutton wrote:
Can you do a
fdisk -u -l /dev/sdb
But of course.

Disk /dev/usb1: 1041 MB, 1041961984 bytes
33 heads, 61 sectors/track, 1010 cylinders, total 2035082 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x00000000

     Device Boot      Start         End      Blocks   Id  System

If the first partition of the usb stick starts at sector less than 63,
grub has probably not been installed due to lack of embedded area.
Yes I've seen that by searching the web. If that's the case grub-install would complain that it cannot embed core.img into the header, wouldn't it? Either way I've checked the size of core.img:

-rw-r--r-- 1 root root 23784 2009-09-30 20:59 /mnt/root/boot/grub/core.img

So it would require ~50 Sectors, since the partition starts at sector 62 it _should_ work, no? I think i can remember setting a different sectors/track (above 63) back in the days but it didn't change any behaviour on boot.

--
Mierswa, Daniel

If you still don't like it, that's ok: that's why I'm boss. I simply know better than you do.
               --- Linus Torvalds, comp.os.linux.advocacy, 1996/07/22




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