I tried booting the 3/13 snapshot ramdisk kernel, and it started up,
but then the upgrade failed on the fsck:

/sbin/fsck_ffs -f /dev/rrz4a (code 1)

After I quit sysinst, I tried the exact same command, and it worked
fine. But sysinst can't seem to run it, and quits. 
Hmm, what is going on????

Bob