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Loadstar 14
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014.d81
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t.write guard
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2022-08-26
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100 lines
*** WRITE GUARD ***
Written by: R.W. Kober
No, this program has nothing to do
with your personal hygiene, unless you
consider losing your temper a health
hazard -- that it may prevent.
This program will 'software' write-
protect a disk. It will protect any
disk from being written to, just like
the write-protect tab does, without
using the tab. It, in no way, effects
the abilty of the disk to be read as
normal.
The only way to permit writing to a
disk again, once protected with 'WRITE
GUARD', is to re-format the disk, or
use 'WRITE GUARD' to UN-GUARD it.
Obviously, unless you wish to lose all
the data on the disk, the second of
these two choices is the most logical.
When a disk is GUARDED with this
program, the '2A' in the disk's
directory is replaced with 'WG',
indicating the disk is WRITE GUARDED.
When the disk is UN-GUARDED with this
program, the '2A' is replaced as
normal. This change in the directory
header is cosmetic only and has no
effect on the normal operation of the
disk. It is simply an easy way to
ascertain that the disk has been
'WRITE GUARDED'.
********** WARNING **********
DO NOT USED THIS PROGRAM ON A
COMMERCIALLY COPY PROTECTED DISK.
Most copy protection schemes modify
the disk BAM in one way or another. As
this program changes three bytes in
the BAM also, it could render the copy
protected disk un-usable.
It has no such adverse effect on
any other disk. If you have any
doubts, make a copy of the disk, and
then use WRITE GUARD on it to be sure.
Files used: WRITE GUARD
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