adding hard disk from SCO OpSer in SCO 5.06

Hi!
Sorry, but I am'not spesialist in SCO OpenServer. I need to add hard disk from SCO Open Server ( "a") in my SCO OpenServer 5.6. I need data from "a". When I added, I see only swap disk, and didn't see root file system. I need to add IDE and SCSI
Please, help me. How right to add disk?
Thanks.
Fred