fubar'ed it good this time...

[Damien Fleuriot]

On 6/27/11 8:17 AM, Kurt Buff wrote:
> Sitrep: Lenovo T61, dual booting WinXP and FreeBSD (amd64 8.1-RELEASE)
> on a 500gb drive. Just did a freebsd-update from 8.1 to 8.2, just
> doing the second boot to do 'freebsd-update install' for the second
> time, and got dumped into the mountroot prompt.
> 
> AFAICT, I managed somehow to write something strange into /etc/fstab.
> Can't tell what it is, because during boot it passes by too quickly
> for me to read, and the boot process dumps me into the mountroot
> prompt.
> 
> WinXP still boots just fine, and the FreeBSD boot manager is in place,
> and was working before the update.
> 
> FreeBSD was booting just fine from /dev/ad0s2a, prior to running freebsd-update.
> 
> Now, however, when I select f1 to boot FreeBSD, I get the boot menu,
> output from the boot process, and (as I've mentioned) then I get the
> mountroot prompt.
> 
> I've even downloaded and burned the 8.2 live boot iso, but it says it
> can't find a hard drive from sysinstall - both the Fdisk and Label
> options say
>      "No disks found! Please verify that your disk controller
>      is being properly probed at boot time. See the Hardware
>      guide on the Documentation menu for clues on
>      diagnosing this type of problem."
> 
> I get no love from the Fixit shell, either, with /dev being void of
> any reference to the hard drive - just acd0.
> 
> I'm pretty sure that if I can mount the disk that I can just edit the
> cruft out of /etc/fstab, and it will all be fine, but I can't get
> there...
> 
> Anyone have a thought on how to get this running? I've googled myself
> silly on this, and am getting nowhere.
> 
> Kurt
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You'll want to download a live CD with UFS support :)

MFSBSD comes to mind:

http://mfsbsd.vx.sk/