diskcomp

In computing, diskcomp is a command used for comparing the complete contents of a floppy disk to another one.

The command is used on DOS, Digital Research FlexOS,[1] IBM/Toshiba 4690 OS,[2] SISNE plus,[3] IBM OS/2[4] and Microsoft Windows.

[5] It is available in MS-DOS versions 3.2 and later and IBM PC DOS releases 1 and later.

[6] Digital Research DR DOS 6.0[7] and Datalight ROM-DOS[8] also include an implementation of the diskcomp command.

The software outputs "Compare OK" if no differences are found, and "Compare error on side [number], track [number]" upon detecting a difference.