diskcp(C)                       19 June 1992                       diskcp(C)


 Name

    diskcp, diskcmp - copy or compare floppy disks

 Syntax

    diskcp [-f] [-d] [-r] [-s] [-u] [-48ds9] [-96ds9] [-96ds15] [-135ds9]
    [-135ds18]

    diskcmp [-d] [-s] [-48ds9] [-96ds9] [-96ds15] [-135ds9] [-135ds18]

 Description

    diskcp is used to make an image (exact copy) of a source floppy disk on a
    target floppy disk.  On machines with one floppy drive, diskcp tem-
    porarily transfers the image to the hard disk until a target floppy is
    inserted into the floppy drive.  On machines with two floppy drives,
    diskcp immediately places the image of the source floppy directly on the
    target floppy.

    diskcmp functions similarly to diskcp.  It compares the contents of one
    floppy disk with the contents of a second floppy disk using the cmp util-
    ity.

    The options are:

    -f        Format the target floppy disk before the image is copied
              (diskcp only).

    -d        The computer has dual floppy drives. diskcp copies the image
              directly onto the target floppy.

    -s        Uses sum(C) to compare the contents of the source and target
              floppies; gives an error message if the two do not match.

    -r        Uses second floppy drive as source drive.

    -u        Prints usage message.

    -48ds9    This setting is for low density 48tpi (360K) floppies. It is
              the default setting.

    -96ds9    This setting is for medium density 96tpi (720K) floppies.

    -96ds15   This setting is for high density 96tpi (1.2M) floppies.

    -135ds9   This setting is for low density 135tpi (720K) 3.5 inch flop-
              pies.

    -135ds18  This setting is for high density 135tpi (1.44M) 3.5 inch flop-
              pies.

    When using the -96ds9 and -96ds15 options of diskcp without the -f
    option, if the first target disk is unformatted, the program will note
    it, format it and make the copy.  If another copy is requested and
    another unformatted target disk is inserted, diskcp exits with a ``System
    error''.  Quit, format the floppy, and reinvoke diskcp to make another
    copy.

 Examples

    To make a copy of a floppy, place the source floppy in the drive and
    type:

       diskcp

    When diskcp has finished copying to the hard disk, it prompts you to
    insert the target floppy in the drive.  If you specify the -f flag when
    you invoke diskcp, the program formats the target floppy.  When the copy
    is finished, diskcp asks if you would like to make another copy of the
    same source disk.  If you enter ``n'', it asks if you would like to copy
    another source disk.

    Specify the -d flag on the command line if you have two floppy drives:

       diskcp -d


 Notes

    If diskcp encounters a write error while copying the source image to the
    target disk, it formats the disk and tries to write the source image
    again.  This happens most often when an unformatted floppy is used and
    the -f flag is not specified.

 Files

    /usr/bin/diskcp
    /usr/bin/diskcmp
    /tmp/disk????

 See also

    cmp(C), dd(C), format(C), sum(C)

 Value added

    diskcmp and diskcp are extensions of AT&T System V provided by The Santa
    Cruz Operation, Inc.