Hello, The PC I'm using atm has a sata HD in it OS winXP , I want to be able to put an IDE drive in also (80 gig )which I have from my old PC and copy all the data to the sata drive , then I want to take out the 80 gig IDE drive and replace it with a 320 gig IDE which has an OS on it , its partitioned down the middle I think , what I need to know... will I lose all the data on the 320 gig or just the partition with the OS on it ? Is it OK to run IDE and sata drives on the same machine? Any other info ie: the best way to go about it etc will be very welcome thanks