Well that is good news that is a SCSI drive so it will be easy to replace if broken. Maybe you should check if the termination is right. I believe Workbench 1 didn't have a HD installer included. There are ways but I can't remember how. I would say good luck!

PS a picture of my current setup



The psion netbook has wifi so I can download files and send them over the serial cable to the Performa 460. The look less yellowed in real life.