Move Files Across Drives

It has been my experience, since switching to 2k, that the MOVE function in explorer does not behave properly when moving LARGE blocks of files.
in win98 i could MOVE gigabytes of files from one drive to another, since win2k anything over 200mb errors out with a share access violation, note this is only when moving files from within one drive to another. On the same drive it is just a pointer redirect which works fine.

If you have any ideas I’m open! Thanks