Q105829: MS-DOS 6.2 Setup May Overwrite Stacker DBLSPACE.BIN File
Article: Q105829
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.2
Operating System(s):
Keyword(s):
Last Modified: 21-NOV-1999
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The information in this article applies to:
- Microsoft MS-DOS operating system version 6.2
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SYMPTOMS
========
If you have STAC Electronics Stacker version 3.11 or 4.0, and there is enough
space on your host drive to install the MS-DOS 6.2 files, MS-DOS 6.2 Upgrade
replaces your Stacker version of DBLSPACE.BIN. As a result, you cannot access
your Stacker-compressed drives.
NOTE: This information does not apply to MS-DOS 6.2 Step-Up.
CAUSE
=====
At the time MS-DOS 6.2 was released, the current version of Stacker was 3.10.
Microsoft ensured that MS-DOS 6.2 Upgrade and MS-DOS 6.2 Step-Up can detect
Stacker 3.10 and do not overwrite it. This ensures you can access your
Stacker-compressed drives (even though Stacker 3.1 replaces a core component of
MS-DOS [DBLSPACE.BIN]).
Since Microsoft cannot guarantee how MS-DOS will interact with future versions of
Stacker, MS-DOS 6.2 Setup was designed to detect and avoid Stacker version 3.10
only.
For Stacker version 3.11, the box and disks still indicate version 3.10. You can
tell the difference between Stacker 3.10 and 3.11 by the file dates and sizes.
The file date for Stacker version 3.11 is 9/08/93 and the files are marked with
the time 3:11 A.M.
RESOLUTION
==========
To work around this problem, contact STAC Electronics to obtain the 62STAC.EXE
file, or follow the procedure below. You can order the 62STAC.EXE file from STAC
Electronics, or you can download it from the STAC Electronics bulletin board
service at (619) 431-7405.
If you are going to obtain the 62STAC.EXE file, use your Uninstall disk to
uninstall MS-DOS 6.2, run 62STAC.EXE, and then reinstall MS-DOS 6.2. 62STAC.EXE
temporarily updates the Stacker driver in memory, not on disk, so you will need
to run MS-DOS 6.2 setup immediately after running the patch.
To replace the MS-DOS 6.2 DBLSPACE.BIN file with the Stacker version of
DBLSPACE.BIN:
1. Use the DELTREE command to delete the DBLSPACE.BIN file in the root of your C
drive. For example, type "deltree c:\dblspace.bin" (without the quotation
marks) at the MS-DOS command prompt and then press ENTER.
2. Put your MS-DOS 6.2 Uninstall disk in drive A and copy DBLSPBIN.HST to your C
drive (renaming it DBLSPACE.BIN in the process). For example, type "copy
a:\dblspbin.hst c:\dblspace.bin" (without the quotation marks) at the MS-DOS
command prompt and then press ENTER.
3. Insert a blank floppy disk in drive A and use the SYS command to transfer
your MS-DOS system files and the Stacker version of DBLSPACE.BIN to the
floppy disk. For example, type "sys c: a:" (without the quotation marks) at
the MS-DOS command prompt and then press ENTER.
4. Leave the floppy disk in drive A and restart your computer.
5. Delete the copy of COMMAND.COM on the compressed drive using the DELTREE
command located on your host drive. For example, if your host drive is H,
type "h:\dos\deltree c:\command.com" (without the quotation marks) at the
MS-DOS command prompt and then press ENTER.
6. Copy COMMAND.COM from your host drive to the root of your compressed drive.
For example, type "copy h:\command.com c:\" (without the quotation marks)at
the MS-DOS command prompt and then press ENTER.
7. Move your MS-DOS 6.2 DOS directory from your host drive to your compressed
drive using the MOVE command. For example, if your host drive is H, type
"move h:\dos\*.* c:\dos" (without the quotation marks) at the MS-DOS command
prompt and then press ENTER. When you are given the "Overwrite
<filename> (Yes/No/All)?" prompt, press A and then press ENTER.
8. Remove the floppy disk from drive A and restart your computer.
9. Use DELTREE to delete the MS-DOS 6.0 versions of IO.SYS and MSDOS.SYS. For
example, type the following commands at the MS-DOS command prompt, pressing
ENTER after each line:
" deltree /y c:\io.sys
deltree /y c:\msdos.sys " (without the quotation marks)
10. Use the ATTRIB command to clear the IO.SYS and MSDOS.SYS file attributes on
the host drive. For example, type the following commands at the MS-DOS
command prompt, pressing ENTER after each line:
" attrib -r -s -h h:\io.sys
attrib -r -s -h h:\msdos.sys " (without the quotation marks)
11. Copy the MS-DOS 6.2 versions of IO.SYS and MSDOS.SYS to drive C. For
example, type the following commands at the MS-DOS command prompt, pressing
ENTER after each line:
" copy h:\io.sys c:\
copy h:\msdos.sys c:\ " (without the quotation marks)
12. Use the ATTRIB command to reset the IO.SYS and MSDOS.SYS file attributes on
both drives. For example, type the following commands at the MS-DOS command
prompt, pressing ENTER after each line:
" attrib +r +s +h c:\io.sys
attrib +r +s +h c:\msdos.sys
attrib +r +s +h h:\io.sys
attrib +r +s +h h:\msdos.sys " (without the quotation marks)
MORE INFORMATION
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Additional query words:
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Keywords :
Technology : kbMSDOSSearch kbMSDOS620
Version : MS-DOS:6.2
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