Here is my current HD setup: Drive 1 C - 10GB primary partition (almost full) D - 280GB secondary partition (about 50GB free) Drive 2 E - 290GB Drive 3 F - 465GB My problem is that my primary C partition (which I thought was a good idea at the time) frequently fills up. I've moved everything I can to D other than Windows and system folders and a few applications. I would like to either: a) merge C and D without losing data b) resize C to include some of the empty space on D c) Image D and move to E and THEN merge C and empty D into one. My concern with merging is the fact that applications will be directed to the wrong drive letter. Does DD fix the registry to change drive letters that programs are applied to? Thanks for any advice.