Mount, Divvy & SCO

The second hard drive (hd1a) in my SCO 5.0.5 suddenly has the wrong name (d1257all) and all of it's mount points (/u1 /u2 & /u3) are gone. Like someone went in and removed everything from divvy. I have good backups and the primary hard drive is good, can I just re divvy and restore from backup or will I have to remove mount points and treat it like a brand new drive.