Upgraded my PM 7600 w/ 2nd 4.5GB Seagate 7200rpm drive, SCSI ID 4, not terminated. Sometimes its there, sometimes not. PC boots up on old primary drive even when start up drive set up was switched to new drive. It appears on desktop only when new drive startup is cold, ie., drive off 5 min.s or longer. Tried SCSIProbe ver. 3.2, which retrieved new drive temporarily. While drive was up, OS 8.5 was installed from CD. New drivers had no effect. Is there a possibility the new drive starts too fast/slow allowing the old drive to assert dominance? Any ideas as to cause & cheap fix?