installed new hard drive - now can't find it

[Dana Holland]

We just installed a new SCSI hard drive in our Dell box - it was the 4th 
of a 4-drive chain.  We're running RH 7.3 on the box.  During boot up we 
see that it recognizes the new device, but it doesn't give any kind of 
label or anything else to identify the new drive.  After the system 
boots up, we can't find the drive to partition it.  How do I find it?