Probably a cable is not fully inserted. I have three (3) drives in one of my G3s and one of them is a 9 gig. No problems. Just be sure to have different SCSI addresses. _________________________________________________________________ Get fast, reliable Internet access with MSN 9 Dial-up now 3 months FREE! http://join.msn.click-url.com/go/onm00200361ave/direct/01/