I've inherited a machine with a large, badly fragmented disk drive containing lots of files.
Defragging is very slow, and makes the drive seek a zillion times (you'd think enough to cause a meltdown).
Would it be faster (and less wear and tear) to
- pop in another physical volume,
- move as much as possible to that scratch volume,
- defrag the now-nearly-empty original volume,
- then move everything back?
If so, is there some rule of thumb by which to predict when it's faster to recopy instead of defragging?