55 lines
2.8 KiB
Plaintext
55 lines
2.8 KiB
Plaintext
HOW TO RESET THE NUMBER OF HARD DISK INSTALLS BACK TO 5
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FOR (MOST) PFS PROGRAMS (WRITE, REPORT AND FILE)
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If you use your PFS programs on a hard disk, then you may eventually
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run out of installs, even though a total of five are permitted. This
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can happen for several reasons. For instance, your hard drive crashes
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and you need to re-install the program from the master disk. "Subtract
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one from reset-count"!! Unfortunately, the PFS "setup" utility can't
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un-install the program and once you are down to zero installs you're out
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of luck (unless you want to take the trouble to send your disk back to
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PFS for a "refill" of installs).
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Luckily, there is an easy way to reset the install count to zero,
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and all you need is your DOS diskette with the DEBUG utility. Simply
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follow the "script" below and you will have, in effect, a brand new
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master disk ready for five hard drive installs.
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WARNING: You will be using your original PFS diskette so be careful!
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If you have any doubts about your ability to use DEBUG, then don't try
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this. If you do proceed, I suggest you try a "dry run" with a sticker
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covering the write-protect notch. In this way, you can do everything
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except write the changes to disk. When you are sure that everything is
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going according to plan, then quit DEBUG, remove the write-protect
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sticker, and start over from the beginning. This "reset" method works
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for the recent versions of most of the PFS series, but you may have a
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version with a different scheme for controlling the number of installs,
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so if DEBUG does not display exactly what is shown in the "script", then
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DO NOT CONTINUE SINCE YOU VERY WELL MAY CLOBBER YOUR MASTER DISK!
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1. Put your DOS diskette in drive A. Type "debug".
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2. Remove the DOS diskette, and put your PFS disk in drive A.
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3. Follow the script below. Lower case is your input, upper case is
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DEBUG's response. Obviously, the comments after the semi-colon are not
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to be typed in. (No, I don't think you're that stupid, but somebody is
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bound to ask). Note: "XXXX" can be any number. <cr> means carriage
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return.
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------------------------------------------------------------------------
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-l 100 0 b8 1 <cr> ; load in the sector with the install count
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-d 100 <cr> ; dump what was just read in
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(now you will see a dump of the sector loaded in. I show only the
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hex part of the first line, although DEBUG will display eight lines)
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XXXX:0100 Dn 68 69 20 66 72 6F 6D-20 4A 54 20 61 6E 64 20
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| this "n" will be some number between 3 and 8
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-e 100 d8 <cr> ; enter "D8"; "D8" means five installs left
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-w 100 0 b8 1 <cr> ; the moment of truth: write the sector back out
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-q <cr> ; quit DEBUG
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------------------------------------------------------------------------
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