DoubleSpace Setup Hangs During First Reboot (98178)
The information in this article applies to:
- Microsoft MS-DOS operating system 6.0
This article was previously published under Q98178 SUMMARYSYMPTOMS
You run DoubleSpace Setup and your computer stops responding (hangs)
during the first reboot or your computer hangs when you boot from a
floppy disk that contains the DBLSPACE.BIN file (such as the Uninstall
disk or the MS-DOS 6 Upgrade Disk 1).
When this problem occurs, your system hangs before the DoubleSpace
compression process begins. Because no data is ever moved to a
DoubleSpace compressed volume file (CVF), no data is lost.
CAUSE
This situation may occur because the ROM BIOS on your computer failed
when DBLSPACE.BIN called interrupt 1AH.
This problem occurs on the following computers:
- Canon models C-200 M-50 and C-200 M-55
- CompuAdd 386
- Computers using a Microsolutions Compaticard
- Positive computers
- Sharp models 6700, 6781, 6785, 6800, and 6881
- Some AEG Olympia 386SX Laptops
- Some older ACER machines
- Snap-on Intel 386 and Intel Above Board 2.0
- Texas Instruments (TI) TravelMate 2000
- Zeos 80386 with an AMI BIOS dated 09/15/89
NOTE: The above list may not be complete.
WORKAROUND
To work around this problem, do the following:
- Restart your computer from an MS-DOS system disk that does not
contain the DBLSPACE.BIN file.
- Change to the root directory of your hard disk, then delete the
DBLSPACE.* files from the root directory of your hard disk. For
example, type the following at the MS-DOS command prompt and
press ENTER:
- Edit your AUTOEXEC.BAT file and remove any DoubleSpace commands.
- Edit your CONFIG.SYS file and remove the following line:
devicehigh=c:\dos\dblspace.sys /move
- Remove any floppy disks from your disk drives and restart your
computer.
- Either use the following procedure to modify the MS-DOS 6 Upgrade
DBLSPACE.BIN file so that it does not make the INT 1A ROM BIOS
call, or upgrade to MS-DOS 6.2.
If you are going to modify DBLSPACE.BIN, use Debug to load the
DBLSPACE.BIN file into memory by typing the following at the
MS-DOS command prompt, and then press ENTER:
debug c:\dos\dblspace.bin
Press ENTER after typing each of the following commands:
Debug Commands
Prompts to Enter Comments
-------------------------------------------------------------
- e c7ea Edit C7EA
nnnn:C7EA CD. 90 Replace INT opcode with NOP
- e c7eb Edit C7EB
nnnn:C7EB 1A. 90 Replace 1A INT number w/ NOP
- w Write the file back to disk
Writing 0C80E bytes
- q Quit Debug
If you have an international version of MS-DOS 6.0 DoubleSpace, the
commands noted above do not work. To modify any version of the
DBLSPACE.BIN file, use Debug to load DBLSPACE.BIN into memory and
press ENTER after typing each of the commands listed below:
Debug Prompts Commands to Enter
-------------------------------------------------------
- r cx
CX aaaa
: <Press the ENTER key>
- s cs:100 L <aaaa value shown above> CD 1A
bbbb:cccc
dddd:eeee
- e (eeee value shown above)
ffff:gggg nn. 90 <press SPACEBAR> 90
- w
Writing nnnnn bytes
- q
For example, if you use this script on the DBLSPACE.BIN file
provided with MS-DOS 6 Upgrade, you would see the following:
H:\>debug dblspace.bin
-r cx
CX C80E
:
-s cs:100 L c80e cd 1a 18FD:0544
18FD:C7EA
-e c7ea
18FD:C7EA CD.90 1A.90
-w
Writing 0C80E bytes
-q
H:\>
- Run DoubleSpace Setup again.
Modification Type: | Major | Last Reviewed: | 11/19/1999 |
---|
Keywords: | KB98178 |
---|
|