Re: [bug #13044] GRUB changes system ID on partition

[Jason Thomas]

try unhide!

On Tue, May 10, 2005 at 08:01:40AM +0000, anonymous wrote:
> 
> URL:
>   <http://savannah.gnu.org/bugs/?func=detailitem&item_id=13044>
> 
>                  Summary: GRUB changes system ID on partition
>                  Project: GNU GRUB
>             Submitted by: None
>             Submitted on: Tue 05/10/2005 at 04:01
>                 Category: Disk &amp; Partition
>                 Severity: Major
>                 Priority: 5 - Normal
>               Item Group: Software Error
>                   Status: None
>                  Privacy: Public
>              Assigned to: None
>          Originator Name: 
>         Originator Email: address@hidden
>              Open/Closed: Open
>                  Release: 0.96-r1
>          Reproducibility: Once
>          Planned Release: 
> 
>     _______________________________________________________
> 
> Details:
> 
> I have not tried reproducing this bug, so hopefully this has happened to
> someone else who can add more information on what happened to them. Since I
> have not reproduced this bug, I will include everything I did before I
> rebooted.
> 
> I originally posted my error messages in the Gentoo Forums, so anyone who is
> interested can look here:
> http://forums.gentoo.org/viewtopic-p-2394790.html#2394790
> 
> I had GRUB working wonderfully on my system, until I made a few minor changes
> to my grub.conf file. I uncommented the fallback line, and added the lines
> hide (hd1,0)
> hide (hd1,1)
> hide (hd1,2)
> to my grub.conf file under the Windows heading. When I rebooted, I got the
> following message:
> GRUB Loading stage1.5.
> 
> GRUB loading, please wait...
> Error 17
> 
> I used a Knoppix CD to try to diagnose the problem. After changing back my
> grub.conf, here's what happened when I ran grub from the command line:
> grub> root hd(1,0)
>  Filesystem type unknown, partition type 0x93
> 
> grub> setup (hd0)
> Error 17: cannot mount selected partition
> 
> It took me a while to realize that instead of focusing on the line that gave
> me the error 17 message, the problem was with the "partition type 0x93"
> message, which I had completely overlooked. I ran fdisk, and sure enough my
> partition table had been changed. My hard disk had four partitions on it.
> Partitions 0-3 had system ID 0x83 and partition 4 had system ID 0x82. None of
> the partitions were set bootable. When I looked at my partition table with
> fdisk, I saw that the first partition had been set bootable and the first
> three partitions had system ID 0x93. I changed the system ID back with fdisk
> and now GRUB works fine, and I can boot to my Linux system. Did GRUB do this?
> I'm a bit skeptical, myself, because it seems like such a big bug would have
> been caught beforehand. Before I rebooted, I also made the first partition
> unbootable with fdisk, so it is possible that this is an fdisk bug (I'll send
> a message their way, too). Good luck, and hopefully someone can confirm this,
> if it truly is a GRUB problem.
> 
> 
> 
>     _______________________________________________________
> 
> Carbon-Copy List:
> 
> CC Address                          | Comment
> ------------------------------------+-----------------------------
> eklitzke --AT-- berkeley --DOT-- edu | Originator Email
> 
> 
> 
> 
>     _______________________________________________________
> 
> Reply to this item at:
> 
>   <http://savannah.gnu.org/bugs/?func=detailitem&item_id=13044>
> 
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-- 
Jason Thomas
Link Innovations - 02 9634 0400
http://www.linkinnovations.com/