Can't boot after upgrade to FC6

[Alexander Apprich]

zephod at cfl.rr.com wrote:
> ----- Original Message -----
> From: Tim <ignored_mailbox at yahoo.com.au>
> Date: Saturday, December 30, 2006 12:14 pm
> Subject: Re: Can't boot after upgrade to FC6
> To: For users of Fedora <fedora-list at redhat.com>
> 
>> On Fri, 2006-12-29 at 16:29 -0500, zephod at cfl.rr.com wrote:
>>> The upgrade from FC5 to FC6 appeared to go OK at first and I was 
>> able 
>>> to log in and do a package update which had no problems. However 
>> after 
>>> I installed xen I can no longer boot; the system just reboots.
>> I wonder if you replaced a non-Xen kernel with a Xen one, rather than
>> installing it as an additional kernel?
>>
> 
> I tried with several different kernels but get the same result.
> 
>>> After some investigation I found that when I boot from the DVD 
>> in 
>>> rescue mode and run grub from the command line I get this:
>>>
>>> # grub
>>> grub> root (hd0,0)
>>>    Filesystem type unknown, partition type 0x7
>>>
>>> The file /boot/device.map contains:
>>>  (hd0) /dev/hdi
>>>  (hd1) /dev/sda
>>>
>>> hd1 is my Windows disk.
>> Perhaps your map file doesn't really show what's considered hd0 
>> and hd1.
>> Try issuing root (hd1,0), and see what difference it makes.  You can
>> just type in (hd and hit the tab key, you'll get auto-complete 
> options
>> from what's available.
>>
>> If something considers the order of the drives to be different, 
>> they'llcount the other way around.
> 
> # grub
> grub> root (<TAB>
> grub> root (hd0,
> 
> Entering 0 gives me the "Filesystem type unknown..." error, entering 
> any other number gives me a "disk not found" error. I tried root 
> (hd1,0) but this doesn't work either.
> 
> If I try the auto completion with a kernel command, I get this:
> 
> # grub
> grub> kernel /vmlin<TAB>
>    Error 17: Cannot mount selected partition.
> 
> I am guessing this is because the root command fails.
> 

Steve,

what hardware do you have (e.g. motherboard, chipset, etc.)? To me it
seems pretty strange, that you harddrive (hd0) is /dev/hdi as hd0 should
be /dev/hda if I'm not wrong.
Did you install/boot with the all-generic-ide option? I'm just wild
guessing here.

Alex