Problem: Your system has more than one disk installed, and you get SCSI-related errors.
Your system might have duplicate SCSI target number settings.
Note the target number and its corresponding unit number.
Plug in another disk and perform Step b again.
If you get an error, change the target number of this disk to be one of the unused target numbers.
Repeat Steps b, c, and d until all the disks are plugged back in.