> I've sucessfully installed all of the distribution packages for NetBSD 
> (SE/30 40MHz Daystar 8/1G), and successfully booted, etc.
> 
> Then, I tried to mount my usr partition, and was told to fsck it first. 
> Fsck died with a floating point error (go figure). So... I decided to use 
> mkfs to build a new file system on just the partition.
> 
> Now it doesn't even boot. It crashes, and jumps to the debugger, just 
> after checking the PRAM (right before the "which shell" prompt would come 
> up). I'm using single user mode, BTW.

Can't tell what you did wrong just from this much of information.
What did you exactly do to "build a new file system on just the
partition"?  And what are the partitions you had at the moment?

ken