mountroot prompt in the middle of updating - can't get past it

[Kurt Buff]

On Wed, Dec 8, 2010 at 22:50, Boris Samorodov <bsam at ipt.ru> wrote:
> On Wed, 8 Dec 2010 11:49:41 -0800 Kurt Buff wrote:
>
>> All,
>
>> I have a Lenovo T61 with a 100g HD that I dual boot with FreeBSD
>> 8.0-STABLE amd64 and Windows XP.
>
>> FBSD is on ad0s2a, with ad0s2b as swap, and XP on ad0s1a.
>
>> Yesterday I booted up FBSD, started xfce4, started a terminal session,
>> su'ed to root and did the following - running a generic kernel:
>
>> # cd /usr/src
>> # make buildworld
>> # make buildkernel
>> # make installkernel
>
>> Then I exited xfce4, did sudo shutdown -r now, and got a mountroot
>> prompt that I now can't get past.
>
>> I can get to the loader prompt, and lsdev shows the following:
>
>>    cd devices:
>>    disk devices:
>>          disk0:     BIOS drive C:
>>             disk0s1: NTFS/HPFS
>>                 disk0s2a:  FFS
>>                 disk02sb:  swap
>
>> when I use '?' at the mountroot prompt I get:
>
>>    List of GEOM managed disk devices:
>>       acd0
>>    Loader variables:
>>    vfs.root.mountfrom=ufs:/dev/ad0s2a
>>    vfs.root.mountfrom.options=rw
>
>
>> I've tried entering the following at the mountroot prompt, with no success:
>>    ufs:/dev/ad0s2a
>>    ufs:/ad0s2a
>>    ufs:ad0s2a
>>    ffs:/dev/ad0s2a
>
>> and several other variations that I've found while googling, but no
>> success anywhere.
>
>> Does anyone have thoughts on how to remedy this?
>
> Just for the last question:
> Try to load an old kernel. (Type "boot /boot/kernel.old" at loader
> prompt.)

That worked...

I think I'll try the update process again.

Anything else you can recommend?

Thanks,

Kurt