How do I copy my whole C: drive to another Hard Disk by typing one DOS command?

In a few commands: attrib -h -r -s /s attrib +a /s xcopy /m c:\ d:\ Using the /M switch with xcopy will allow you to continue if the operation is aborted (like due to access denied error, etc.), rather than having to start over. When doing this, if you also want the destination drive to be bootable, you must first sys it with sys.com. And, if you want to correctly set the read-only, hidden, and system file-attributes on the destination drive, you'll have to manually do so. Therefore, you should create a directory listing of which files had those attributes set. (Can be done with commands DIR/AH/S>hidden.txt, DIR/AR/S>readonly.txt, etc.) This works fine; I've done it many times. -¤¤¥¤Ö

Correction to previous message: was: xcopy/m c:\ d:\ should be: xcopy/m/s c:\ d:\ where c: is the source drive and d: is the destination drive.