Mugsworth, thank you for your response. One continuous 60 gig drive. Manufacturers dont partition any more? Some time ago I posted my concerns about the warning one receives from Photoshop about running it on the same partition as the os. I got several responses that indicated that PS would not suffer performance problems and that the only real concern is when PS is consuming too much of a temp file and it impedes the os. I have about 40 gigs free so if thats the case it shouldnt be a problem. My tech support recommended NOT to use Partition Magic. My setting are: Cache Levels 4, Available RAM 954625, 75% available to PS. Again, I open PS and before any file is loaded, a 48 meg PS-temp file is set, even with all that available RAM. Ill be the first to admit that Im not very knowledgeable about w2k. Im on sp1. Maybe sp2 would make a difference? But again, tech support does not recommend it unless you have major problems. I think Ill try XP when the bugs are worked out. Thank you for reading my rambling. ANY advice to improve PS performance would be greatly appreciated! Regards Pinto