Well im having a pretty annoying problem. I have two hard drives, a recently bought 200gig and a 100gig. I formated and installed windows on the 200 gig, everything was fine. I plugged the 100gig hd in so i can transfer files and all of that to my 200gig hd. That was fine. Then i wanted to change the drive letter of the 100 gig from drive F to drive D. It worked, everything was fine. I decided to restart my computer, and that is where the problems arose. Now whenever i turn my comp on and it goes to the screen where it is detecting IDE drives (primary master and slave drives and all that) it doesnt show the 200gig as there. If i have the 100gig HD plugged in as well, doesnt matter if it is as master or slave drive, the screen freezes on the IDE detection screen. I can load my 100gig hd (it has winxp home installed) as long as my 200gig isnt plugged in. I have tried various methods, having the 200gig plugged in by itself, and changing the jumper to master, slave and cable select, still the drive isnt recognized and it just changes screens and says something to the affect of Disk Failure please enter boot disk, or something like that. I have tried a lot of things, but the 200gig HD just will not be recognized, so i cannot format it or anything because the comp doesnt see it. I have tried having both HD's plugged in, and changing around the options for master and slave drive, but the 200gig isnt being detected. The 200gig has xp pro installed. I hope i gave enough enough, and i would appreciate any help you can give.