The DISKCOMP command performs a track by track comparison of the specified
diskettes.  The diskettes normally have been duplicated using the DISKCOPY
command.  The command format is as follows:

          DISKCOMP [d:] [d:][/1][/8]

If both drives are the same letter, or neither drive is specified, a single
drive comparison is performed.  You are prompted to insert the correct
diskettes at the appropriate time.  If only one drive is specified, the default
disk is used as the second drive (and if the default drive is the drive
specified, the comparsion is performed using the single drive).  The command
will not work on fixed disks.

Two options are available:
/1  - Only the first side of the diskette is compared regardless of the
      diskette or drive type.

/8  - Only the first 8 sectors of each track are compared.

The first diskette has its information read and this is compared to the
information read from the second disk at the same physical disk location.
If the information is not exactly the same, an error message is displayed
indicating where the mismatch was located.
The characteristics of the second diskette is derived from the first diskette
read.  If only one side of the first diskette can be read, or the /1 option
is specified only one side is compared.  Should the first diskette be double
sided and no /1 option specified, both sides are compared.  If the first
diskette has 9 sectors per track, all 9 are compared unless overridden with
the /8 option.  Should the first drive be double sided and the second single
sided, an error message is displayed and the comparison is not attempted.

If the disks were duplicated using the COPY command, a DISKCOMP will usually
fail.  This does not indicate the copied information is inaccurate, rather it
is the expected result.  The likelihood that all information would be copied to
exactly the same physical locations on the second diskette is quite low.
DISKCOMP compares the two diskettes by physical location rather than in a file
by file manner.  If you suspect there was a problem transferring information,
compare the two files using the COMP command, and use the /V option when using
the COPY command (see the help files COMP and COPY for more information).
PING,
              