Article: Q105183
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.2,6.22
Operating System(s):
Keyword(s):
Last Modified: 21-NOV-1999
-------------------------------------------------------------------------------
The information in this article applies to:
- Microsoft MS-DOS operating system versions 6.2, 6.22
-------------------------------------------------------------------------------
SYMPTOMS
========
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.
If you try to back up to a DoubleSpace-compressed floppy disk using Microsoft
Backup or Microsoft Backup for Windows, you receive the following message:
You have inserted a diskette which contains existing directories and files.
Please insert an empty diskette or choose "Overwrite" to use the current
diskette.
Partial file list
dblspace.000
readthis.txt
NOTE: If you choose "MS-DOS Drive and Path" instead on drive A or drive B, you
receive the message "insufficient disk space in <drive letter>: Backup to
DOS path cannot be completed."
CAUSE
=====
Microsoft Backup writes over your DoubleSpace-compressed floppy disk, making it
an uncompressed disk.
Since Backup compresses data, there is no benefit to writing compressed data to a
compressed disk. Once the data has been compressed once, it cannot be compressed
again.
WORKAROUND
==========
You may be able to work around this problem by choosing MS-DOS Path for your
destination.
Additional query words: MWBackup 6.20
======================================================================
Keywords :
Technology : kbMSDOSSearch kbMSDOS622 kbMSDOS620
Version : MS-DOS:6.2,6.22
=============================================================================