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PAT312.TXT
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1993-09-17
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NOVELL TECHNICAL INFORMATION DOCUMENT
TITLE: Patch for INT 21,26H Function Call
DOCUMENT ID: TID000259
DOCUMENT REVISION: A
DATE: 01JUL93
ALERT STATUS: Yellow
INFORMATION TYPE: Symptom Solution
README FOR: PAT312.EXE
NOVELL PRODUCT and VERSION:
DR DOS 6.0 4/92
ABSTRACT:
This patch fixes a problem with the INT 21,26h function call, where the
create PSP segment did not correctly fill in the correct PSP because the
segment from which the PSP was copied was incorrect.
_________________________________________________________________
DISCLAIMER
THE ORIGIN OF THIS INFORMATION MAY BE INTERNAL OR EXTERNAL TO NOVELL.
NOVELL MAKES EVERY EFFORT WITHIN ITS MEANS TO VERIFY THIS INFORMATION.
HOWEVER, THE INFORMATION PROVIDED IN THIS DOCUMENT IS FOR YOUR INFORMATION
ONLY. NOVELL MAKES NO EXPLICIT OR IMPLIED CLAIMS TO THE VALIDITY OF THIS
INFORMATION.
_________________________________________________________________
Self-Extracting File Name: PAT312.EXE
Files Included Size Date Time
PAT312.TXT (This File)
IBMDOS.312 39239 1-07-92 3:12a
README of PATCH312.EXE
Product: DR DOS 6.0
Description: This patch fixes a problem with INT 21h function 26h (create
PSP) the segment from which the PSP was copied was incorrect so the PSP was
not filled correctly and did not contain the command tail.
ASSUMPTIONS:
1. The file IBMDOS.312 is in the root directory of your C:\ drive.
2. TaskMAX is not loaded.
INSTALLATION INSTRUCTIONS:
1. Remove the attributes from the current working copy of IBMDOS.COM
From the C prompt:
Type: ATTRIB -RSH IBMDOS.COM
Press <ENTER>
2. Make a backup copy of IBMDOS.COM
Type: COPY IBMDOS.COM C:\DRDOS\IBMDOS.OLD
Press <ENTER>
3. Replace the original IBMDOS.COM with the patched IBMDOS.312
Type: COPY IBMDOS.312 IBMDOS.COM
Press <ENTER>
4. Verify the copied file is the correct size, date and checksum
Type: CD \
From the C prompt:
Type: XDIR IBMDOS.COM /C
Press <ENTER>
The following message will display:
--a--- 39,239 1-07-92 3:12a A0C6 c:ibmdos.com
NOTE: In Archive attribute (a) may be set, however it is not a required
attribute.
5. Replace the System, Hidden, Read-Only attributes on IBMDOS.COM
Type: ATTRIB +RSH IBMDOS.COM
Press <ENTER>
6. Reboot the computer.