I can't help adding my own 2c here. From a theoretical standpoint, it would seem that the defrag process wears out the drive much more than the fragmentation causes. As Ian points out, most installations will never notice any speed difference between fragmented and defragged drives. The only real advantage that I can see from defragmenting a drive is that if the directory is ever damaged, the actual data would be in contiguous blocks and easier to recover. So there you have it. Defrag if you feel the need, but don't overdo it or expect significant improvements. And to answer the original question: yes, you would need to defrag all drives. Peter ----------------------------------------------- The NoSpin Group [log in to unmask] > -----Original Message----- > I'd like to add my 2c worth to this string about defragging, > and it's this: > > Defragging is overrated. > > > Ian Porter > > On 19 Sep 2003, at 6:04, Ann Sensabaugh wrote: > > > I read from asktcl.com that once per month you should Scandisk & > > Defrag. When I go to Defrag it says "which drive do I want > to defrag, > > Drive C or Drive D........do I defrag both of them or only "Hold No Punches.." Rode brings you great shareware/freeware programs with his honest opinions in this weekly column. http://freepctech.com/rode