How many drives total, just those 2? Are they on the same IDE cable or each on a separate cable? Have you double-checked the jumper settings on the drives? Two drives on the same cable should be jumpered to either MASTER and SLAVE, respectfully. or both on CABLE SELECT. Incorrect jumper settings could possibly cause the problem you mentioned. Also. if the drive shows up initially, and then disappears, it could also be a lack of power to the drive(s). Assuming the actual power supply is not bad, you can try using another molex from the PSU (plug that goes into the drive for power). This would fix the problem if that specific molex is bad. Could the power supply either be too low in wattage for everything you have on your system? Or, maybe the PSU is going bad, no longer being able to output the necessary power needed. Do you know which PSU is in the system, and how many watts max it outputs? Lastly, of course, it could be a bad drive. Is it always the same drive that it has trouble seeing? If so, which one? ---Troth _____ From: pctechtalk-bounce@xxxxxxxxxxxxx [mailto:pctechtalk-bounce@xxxxxxxxxxxxx] On Behalf Of Theki56@xxxxxx Sent: Saturday, February 19, 2005 1:24 AM To: pctechtalk@xxxxxxxxxxxxx Subject: -=PCTechTalk=- new question I swapped my ribbon cables on my 2 hard drives for rounded cables to improve air flow and also in hope of fixing an annoying problem-my system only sees 1 hard drive all the time,and the other sometimes,like after a hard boot or sometimes after a reboot;cables seem tight,2nd drive only stays visible for a short time after it reappears. Win XP on both disks,both are W/D drives ,primary is 80 gig,secondary is 30 gig TIA, Dan "Natural ability without education has more often attained to glory and virtue than education without natural ability." Cicero (106 BC - 43 BC)