Article: Q97848
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.0,6.2,6.22
Operating System(s):
Keyword(s):
Last Modified: 23-NOV-1999
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The information in this article applies to:
- Microsoft MS-DOS operating system versions 6.0, 6.2, 6.22
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This information applies to both Microsoft DoubleSpace and Microsoft
DriveSpace. For MS-DOS 6.22, use DRVSPACE in place of DBLSPACE for commands
and filenames.
SYMPTOMS
========
When you run Irwin Magnetic Systems' EZTape for MS-DOS, version 2.22 or version
3.1, on a DoubleSpace-compressed drive, the following problems may occur:
- EZTape may stop responding (hang) when performing a backup or restore on the
DoubleSpace-compressed drive.
-or-
- EZTape may display one of the following error messages when performing a
backup or restore on a compressed drive:
- Run-time error R6001 null pointer assignment
- EMM386 exception error #12, enter to reboot computer
CAUSE
=====
EZTape for MS-DOS version 2.22 or 3.1 may identify a DoubleSpace- compressed
drive as a nonstandard drive and may require that the DOSONLY environment
variable is set before you can begin an action ona compressed drive.
WORKAROUND
==========
To work around this problem, set the MS-DOS environment variable to DOSONLY=1
before you use EZTape for MS-DOS.
To do this, using MS-DOS Editor (or another ASCII text editor), insert the
following statement in the AUTOEXEC.BAT file:
" SET DOSONLY=1 " (without the quotation marks)
Setting the DOSONLY environment variable forces EZTape for MS-DOS to use standard
MS-DOS system calls to access the drive. You must reboot your computer for this
change to take effect.
NOTE: The DOSONLY environment variable should not be necessary for use on
uncompressed drives.
For more information, contact Irwin Magnetic Systems Technical Support.
EZTape for MS-DOS is manufactured by Irwin Magnetic Systems, Inc., a vendor
independent of Microsoft; we make no warranty, implied or otherwise, regarding
this product's performance or reliability.
Additional query words: 6.00 double space back up 3rdparty 6.20 dblspace easy tape errmsg err msg
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Keywords :
Technology : kbMSDOSSearch kbMSDOS622 kbMSDOS620 kbMSDOS600
Version : MS-DOS:6.0,6.2,6.22
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