If you want to make an exact copy of a floppy disk, the DISKCOPY command is probably the best one to use. It is ideal for making copies of software master disks. The two disks must be of the same type and capaciti before you can use the DISKCOPY command. If the target disk is not formatted, it does not matter because it will be formatted in the same operation.

To duplicate a disk from drive A (source) to a disk inserted in drive B (target), type:
C:\>diskcopy a: b:

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If you only have one disk drive and you want to duplicate a disk, type:
C:\ diskcopy a: a:

You will be asked to insert the source disk and then the target disk. Sometimes if there is a lot of information to transfer, you may be asked to swap the source and target disks several times. Just follow the instructions DOS gives you and ensure that the disks are labeled properly so tharyou insert the correct ones.