Make sure you are executing the DISKCOPY command under a CMD.EXE shell. Command.com is the old 16-bit DOS command line, it does not work properly with some newer features.

Two questions about usage of console programs in windows xp/2k<BR><BR><BR><B>1. command prompt here extension & enviroment variables </B><BR><BR>I have the "command prompt here" context menu tweak ...