Booting Issues - ACPI and HD

Hey all,

Before I get into my FreeBSD issue, I would like to apologize for not being able to provide abundant details in this first submission. The server I am having trouble with is located at school (it's the tech club server) and so I don't have a lot of access to it when it is convenient.

Here it is:

The server was shutdown somehow. I'm not yet sure how, but I don't think anyone ran a shutdown command. But it was shutdown, and when it tried to boot back up, it freaked out. More specifically, it had issues with ACPI and mounting the root partition. When booting with ACPI, it would spit out some error about ACPI checksum failing. Then it would get to the point where it was trying to mount the hd. It can't, and gives a prompt asking me to manually provide the location of the root partition. I do that - ufs:/dev/ad0s1a (or something like that) - and it fails. When booting with ACPI disabled, it skips the ACPI errors (obviously) but still can't mount the drive.

Now, I have been successful booting Knoppix-STD (linux liveCD), but did not have time (unfortunately) to try mounting the drive. I'll try that when I get a chance. I say this because I'm not sure if the drive is broken or the data is corrupted. Or there may be some other cause.

I have been running BSD on several servers for a few years now, and have never had a problem like this. Any advice is greatly appreciated. Again, sorry for lack of details, I'll get more when I can.

Thanks,
Ryan

P.S. My current plan is to install FreeBSD onto another drive, then copy over bins, confs, and data. I can't do this for a couple days, so I am hoping to come across a solution that would allow me to repair the current installation.
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