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- Program DCOPY V1.2 November 1990
-
- Program to copy floppy disks with the greatest possible speed and
- convenience.
-
- Advantages over DISKCOPY include:-
- - Copies an entire disk without multiple disk changes.
- - Makes multiple copies of a disk without reading the source disk
- more than once.
- - Makes unlimited number of attempts to read bad parts of a disk.
- - Verifies every track and allows repeated attempts to write a track
- in the event of difficulty.
- - Status of copying is shown throughout.
- - Detailed diagnostic information in the event of problems.
- - Some add-on 3.5 inch drive configurations will not work reliably
- with DISKCOPY but do work properly with DCOPY.
-
- Disadvantages compared to DISKCOPY include:-
- - Requires a hard disk (drive C) to be available with enough disk space.
- - Cannot copy from one drive to another.
- - Cannot format diskettes.
-
- This program reads sectors directly from an entire floppy disk and writes
- a file to drive C called DCOPY.$$$ containing the data. Then it asks
- for a new disk and writes the file to the disk. It then allows
- additional copies to be made. A new source disk can then be loaded.
-
- It handles 360KB and 1.2MB 5.25" disks and 720KB and 1.44MB 3.5" disks.
- It handles both the normal 720KB format and an older 720KB format that
- is sometimes encountered.
- The target disk must be formatted and must be of the same type as the
- source disk, with the exception that 360KB images may also be copied on
- 720KB diskettes.
-
- Usage: DCOPY drive:
- eg. DCOPY A:
- or DCOPY B:
- If any serious errors are encountered the temporary file is deleted and
- an error message is displayed and the program stops.
- However when reading the source disk an unlimited number of attempts
- to read a bad sector can be made.
- The target disk is verified track by track during writing and if an error
- occurs then an unlimited number of attempts to write the track and again
- verify it can be made.
- It is essential to remove the disk in the drive after copying is
- complete and the program ends. This is because DOS does not know that
- the entire contents of the disk have been altered. If the disk is still
- required in the drive, it is adequate to just open then close the door
- of the drive.
-
-