Copying On Dual Drive Systems - TRIGEM CW3D25C Operation Manual

Type N to return to the system prompt.
If there is a problem with the backup diskette, or if you put the
wrong diskette into the drive by mistake, the computer will
respond:
If the computer shows compare errors, start the copying
procedure over again at the beginning. The backup copy of the
MS-DOS diskette must be identical to the original. After you
have confirmed that the backup diskette is a good copy of the
master MS-DOS diskette, you may put your master diskette
away in a safe place. From now on, only use the master MS-DOS
diskette to make copies. For all other purposes, use the backup
copy of the MS-DOS diskette. By using the backup copy, you
ensure that any accidental erasures can be replaced.

Copying on Dual Drive Systems

To make backup copies of your MS-DOS diskettes on a dualdrive
system, follow the instructions below:
First, turn your computer on and boot up MS-DOS. Choose
the Command Prompt option from the DOS shell menu. The
system prompt will appear. Enter the following command:
4-16 Using MS-DOS With Your Computer