Re: [Bug-grub] grub "hide" damaged my partition table

[Jason Thomas]

On Mon, Jan 14, 2002 at 11:08:27AM -0500, Joe Krahn wrote:
> I have a RedHat 7.2 system with a 40G IDE disk.
> Using the grub "hide" command destroyed my partition table.
> Here's the approximate disk layout:
> 
> Four primary partitions, no extended.
> hda1=ext2, 4G
> hda2=ext2, 4G
> hda3=Linux swap, 1G
> hda4=fat32, 31G
> 
> I tried "hide (hd0,3)". The command was accepted, but hda4
> was not hidden. I tried hiding one of the ext2 partitions.
> I think it was hda1, which contains the /boot/grub data directory,
> with "hide (hd0,1)"
> Now entering "geometry (hd0)" shows nothing.
> No unhide commands will work.
> 
> Possible non-standard" things are the use of all four primary
> partitons, no extended ones, and having a large LBA partition.
> Also, can "hiding" the ext2 directory with /boot/grub mess things
> up?

yes, thats where grub reads the grub.conf file from.

you need to boot from a bootdisk and use fdisk to change the partition
type back to ext2.

> Grub still loads at boot time, but the menus, etc., are all gone.
> 
> Do you have any ideas of whatcould have happened?
> I can try to repeat it and get a copy of the before and after
> if this looks like a bug that isn't already fixed.