Hello there ! This is my 1st post. I have a problem with installing properly a new hard drive that I bought. It's a 160 gigs capacity, and my 3rd hard drive in my system. Prior to installing it, here's what the situation was: ** Physical Drive #1: 80 gigs (boot drive) ** C:\ 5 gigs D:\ 5 Gigs E:\ 10 Gigs F:\ 10 Gigs G:\ 10 Gigs H:\ 10 Gigs I:\ 10 Gigs J:\ 10 Gigs K:\ 10 Gigs ** Physical Drive #2: 40 Gigs (used for storage, setup as primary slave) ** L:\ 10 Gigs M:\ 10 Gigs N:\ 10 Gigs O:\ 10 Gigs ** CD ROM Drive (setup as secondary slave)** P:\ Now that's 3 IDE devices, and my system can only accomodate 3, because one of my IDE cable is a "single", only one IDE device can be plugged on it. Ok, so here comes my NEW 160 gigs drive. I planned on dividing it in 4 partitions of 40 gigs, and then to plug it in my system and transfer everything from Physical drive 2 to it. Once that would be done, I could unplug the Physical Drive #2 and store it away. Drive partition letters would remain the same (as I thought) because the Operating system manages it automatically. So in order to have all 3 drives plugged in at the same time, I unplugged the CD rom. And then I used the plug for the New Drive. The new (temporary) drive order letters were: Physical Drive #1 (Primary Master) letters C thru K (same as before), Physical Drive #2 (Primary Slave) letters L thru O (same as before), New Drive #3 (Secondary Slave) letters P thru S (remember, the CD Rom was unplugged) Are you following me ? Ok... So I transfered everything from Drive #2 to Drive #3. I then shutdown the system, unplugged Drive #2, then I put the new drive #3 in its place (as primary slave). I then reconnected the CD Rom as Secondary Slave and booted up my system. Much to my surprise, here's what I got from Windows: ** Physical Drive #1: 80 gigs (boot drive) ** C:\ 5 gigs D:\ 5 Gigs E:\ 10 Gigs F:\ 10 Gigs G:\ 10 Gigs H:\ 10 Gigs I:\ 10 Gigs J:\ 10 Gigs K:\ 10 Gigs ** CD ROM Drive (setup as secondary slave)** L:\ ** Physical Drive #3: 160 Gigs (used for storage, setup as primary slave) ** P:\ 40 Gigs Q:\ 40 Gigs R:\ 40 Gigs S:\ 40 Gigs I'm sure you can see what the problem is. 3 problems occured: the drive letters for the new drive were not moved back to L, M, N O. And the CD Rom (which is supposed to get the lowest priority in drive letters from Windows) should have been assigned LAST (to P:\) . And finally, there is no drive letter M, N and O in my system. This is all bad, because in order for my system to function properly, the drive letters of the new drive must match those of the old drive #2. What happened ? Did I do anything wrong ? Can anyone help ? I really need to fix it. If you need more details, please ask ! Thanks in advance...