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- Welcome to QDC 1.0!
- -------------------
-
- QDC stands for Quick Disk Copy - it is intended to save users who
- frequently copy disks a lot of time.
-
- When DOS supported only 360K and smaller floppies and there were no
- such things as network driver software and TSRs, copying a disk with one
- drive was as simple as DISKCOPY A: A: with one swap involved. Even better,
- if you had two floppies, you were set! These days, however, machines with
- either one 1.44 MB floppy, or one of each of the HD floppies and tons of
- network software and TSRs are more the rule. On this type of machine, a
- DOS DISKCOPY of a 1.44 MB floppy can take forever! What is especially
- annoying is the continual swapping of source and destination disks involved
- - on a machine with, say, 450K of conventional memory (the kind CHKDSK
- reports) free, a DISKCOPY of a 1.44 MB floppy can take four to five swaps!
- DISKCOPYing the same disk shelled out from Lotus may take 8 to 10 swaps!
-
- QDC will alleviate these annoyances - as long as QDC has enough
- memory to run (approximately 45K) and sufficient space on the drive it is
- started from (as many bytes free as the disk to be copied is large), it will
- perform the copy operation in only one swap! You may be thinking this is
- just some sort of XCOPY scheme - no! QDC creates an IMAGE FILE of the
- source and writes that out to the destination - the source and destination
- will DISKCOMPare exactly.
-
-
- Using QDC
- ---------
-
- Say you want to copy a 1.44 MB floppy and you have one 3.5" drive you
- call A: - then you would insert the source floppy into the drive, type
-
- QDC A:
-
- and follow the directions. Explanation: QDC will take a look at floppy in
- drive A: and determine how much space it needs to store the image file. It
- then checks this amount against how much it has available in the startup
- drive - if the latter amount is larger, QDC begins to read the source floppy
- and write an IMAGE FILE of it to the default drive (the one QDC was started
- from.) When completed, QDC will prompt you to insert the destination disk
- and will write the IMAGE FILE to it. Some caveats:
-
- 1) QDC is known to work on 320K, 360K, 720K, 1.2 MB, and 1.44 MB
- floppies - it should be able to handle other sizes without a
- problem, but this has not been tested. QDC does not trust media
- descriptor bytes and determines disk parameters by reading the
- first sector's track, sector, etc., information directly.
-
- 2) QDC *DOES NOT* format the destination disk like DISKCOPY does.
- It is my opinion that there are far better format program
- options than DOS FORMAT. My commercial recommendation would
- be the Norton Utilities SF program. Sharewarewise, I like
- FORDSK. Implementing a fast format in QDC would make the
- program twice as large, and implementing a DOS format would not
- give one the option of speeding up large copy operations by
- using a decent format program - therefore I left formatting
- out.
-
-
- Speeding Up QDC
- ---------------
-
- As it is, QDC is a fairly fast program, but a few things can be done to
- make it even faster:
-
- QDCM.BAT: This batch file is useful for making multiple copies
- without having to run QDC repeatedly - this basically
- works like DISKCOPY's asking you "Copy another disk (y/n)"
- The command syntax for QDCM is the same as that for QDC.
-
- CACHE: Having a hard disk cache will make QDC substantially
- faster when it comes to writing the IMAGE FILE back to the
- destination disk. There are many good shareware disk
- cache programs, I am sure, but I have had the chance only
- to look at the commercial ones. PC-KWIK Cache is my
- favorite and works well with QDC.
-
- RAM DISK: If you have, say four megabytes of memory, you can set up
- a RAM disk and use that as QDC's default drive. The file
- CONFIG.RAM is included as an example of how to implement a
- RAM DISK using the MS/PC DOS VDISK.SYS driver. Using a
- large RAM disk is currently the fastest way to copy disks
- using QDC. A later version will include the option of
- writing the image file directly to Expanded Memory and
- thus eliminate the hassle of the RAM DISK.
-
-
- QDC 1.0 is NOT Public Domain Software!
- --------------------------------------
-
- QDC 1.0 is (c) 1990 by Peter A. Dinda. I wrote QDC to make life simpler
- for my coworkers and myself. If you find QDC to be useful, please send $10
- or so to:
-
- Peter A. Dinda Re: QDC
- 404 N. Walbridge #7
- Madison, WI 53714
-
- Registering QDC gives you the right to modify the line
-
- #define OWNER "*UNREGISTERED*"
-
- in the source code and recompile. If you send an extra $5 to me, I will do
- this for you and send you a binary that will flash your name whenever you
- use it. Comments, etc. can also be mailed to the above address or sent via
- email to dinda@VMS.macc.wisc.edu and via BBS to the MIC@MACC BBS
- (608) 263-6057.
-
-
- Why Should You Register QDC?
- ----------------------------
-
- Registering QDC gives you:
-
- 1) Peace of mind knowing you did the right thing helping to support
- a poor college student who worked a long time on QDC.
- 2) The right to recompile the source code with the "OWNER" line
- changed to your name.
-
-
- Who Can't Use QDC
- -----------------
-
- Use of QDC by any military establishment is VERBOTEN. Peace, dudes!
-
-
- Contents of the Distribution Archive
- ------------------------------------
-
- QDC.EXE - The QDC program
- QDC.C - The Turbo C source code to QDC
- QDCM.BAT - Multiple copy extension to QDC
- GETYN.COM - Needed by QDCM.BAT
- CONFIG.RAM - Example CONFIG.SYS file to implement RAM DISK
- QDC.DOC - This documentation
-