well o&o has 3 different methods.
pure defrag just recombines split files and moves everything close to the start of the drive... good for cleanups, nice and fast.
the other two, sort by name or date rearrange almost everything in your drive, arranging all the files in each directory by its name or date. takes much longer, but gives good results.
as for the blocks that look fragmented... i bet they are either pink, purple or green right?
they are locked files, swapfile or system files respectfuly, and cannot be moved while IN win2k.
to move them u gotta do a boot time defrag of all system files.
when i last reinstalled win2k it was a mess, and it took some time to boot up. after a ful defrag and boot time one it now goes alot quicker.
Excuse me for a moment. I need to drive my ergonomic wheely chair over a sheet of bubble wrap!