Grub can't find my hard drive

Wiliam Harrington wwh20610 at cmsu2.cmsu.edu
Sat Jun 4 11:26:01 PDT 2005


On Sat, 04 Jun 2005 10:35:08 -0400, curbyIII wrote:

> This is my first LFS system.  I have completed most of the 6.0 LFS book
> but have hit a brick wall in section 8.4.  I am only a
> beginner-intermediate Linux user so I will describe what I have done in
> as much detail as I can (sorry if it's not relevant).
> 
> I currently have windows xp, but I want to dual boot with LFS.  I
> partitioned my SATA hard drive (using partition magic) into 3
> partitions: windows (sda1), LFS (sda5), and swap (sda6).  I am using
> Knoppix 3.7 to build the LFS system.  Everything went relatively
> smoothly until I reached section 8.4.  I ran the grub shell and tried
> root (           followed by a TAB but grub just displayed root (
> without any other completions.  I tried root(hd0, + TAB root(hd1, + TAB
> ...
> root(hd7, + TAB
> and it always returned the same error message: Error 21: Selected disk
> does not exist
> 
> Beyond hd7 grub returned
> root(hd8, + TAB
> Error 12: Invalid device requested
> 
> I ran grub in Knoppix and it behaved in exactly the same way.  I looked
> up the grub documentation and it is not supposed to distinguish SCSI
> drives from IDE drives.
> 
> Any assistance would be greatly appreciated.
> 
> Thank you
> 
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ls /dev/and see if the devices actually exist? if not... run udevstart
then see if they exist... you can also create the devices yourself with
mknod. The character devices listing is in the linux source tree in
Documentation/devices.txt

Sincerely,
William Harrington (Ratrophy)



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