Commodore PC Ms-Dos 3.2 User's Manual page 120

48 MS-DOS User's Reference
Diskcomp
The Diskcomp
switches
Diskcomp
Purpose:
Compares the contents of the disk in the source drive to the disk
in the target drive.
Syntax:
diskcomp [drive:] [drive:] [/I] [/8]
Comments:
The first drive: option specifies the drive that contains the source
disk, and the second drive: option specifies the drive that contains
the target disk.
If you specify only one drive, diskcomp uses the default drive as
the target drive. If you specify the same drive as the source and
target, diskcomp does a comparison using one drive, and
prompts you to insert the disks as appropriate.
The /I switch causes diskcomp to compare just the first side of
the disk, even if the disks and drives that you are using are
double-sided.
The /8 switch causes diskcomp to compare just the first 8 sec
tors per track, even if the disks contain 9 or 15 sectors per track.
Diskcomp performs a track-by-track comparison of the disks.
It automatically determines the number of sides and sectors per
track based on the format of the source disk. If the target disk
is not the same type as the disk in the source drive, diskcomp
displays the following message:
Drive types or diskette types
not compatible
If all the tracks are the same, diskcomp displays the message:
Compare OK
If the tracks are not the same, diskcomp displays a "Compare
error" message that includes the track and side number where it
found the mismatch.
When diskcomp completes the comparison, it prompts you with
the following message:
U
u
o
u
Compare another diskette (Y/N)?_