Using DoubleSpace with LANtastic (97573)

The information in this article applies to:
    Microsoft MS-DOS operating system 6.0
    Microsoft MS-DOS operating system 6.2
    Microsoft MS-DOS operating system 6.22

This article was previously published under Q97573


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.

This article describes the use of LANtastic software with DoubleSpace and contains information not found in the NETWORKS.TXT file. For background information, section 6 of the NETWORKS.TXT file is included here:

You cannot use DoubleSpace to compress a drive on a LANtastic server because all local drives are viewed as network drives. To compress a drive, disable the server service by typing REM and space in front of the server command in your AUTOEXEC.BAT file, and restarting the computer. Then run DoubleSpace to compress the drive. After you run DoubleSpace, remove the REM command from your AUTOEXEC.BAT file.

After you compress a drive on a server, some DoubleSpace features-- such as the LIST, CHKDSK, MOUNT, and UNMOUNT features--will not work correctly unless you stop the server service.


The problem described above occurs only when the machine is running the LANtastic server software. You can use DoubleSpace on a drive if the server software is not loaded.

When a network drive is assigned to a DoubleSpace drive and you try to run a DoubleSpace command, the following message is displayed

A network drive has been connected using letter <X>. To use drive <X>, you must first remove the network drive or assign it a different drive letter.
where <X> is the DoubleSpace drive.

If you try to mount a DoubleSpace drive while the LANtastic server software is running, you receive the error message:

Dblspace cannot mount drive <X> because of an unrecognized error(#105).
Because LANtastic servers make all local drives appear as network drives, most DoubleSpace operations will not work correctly. This is consistent with most MS-DOS-based peer-to-peer networks.

If are loading LANtastic NODERUN.EXE, AILANBIO.EXE, or REDIR.EXE, DoubleSpace has the following problems with floppy disks:
    DoubleSpace thinks the floppy disk drive is a network drive; therefore, its functions do not access it.
    When compressing a floppy disk, DoubleSpace reboots the system twice (as it would if you were compressing a hard disk).
    When explicitly mounting or compressing a floppy disk, DoubleSpace puts an ActivateDrive line in the DBLSPACE.INI file (as if it were a hard disk). Every time the system boots, the floppy disk drive is recalibrated multiple times during the boot process (usually making a lot of noise).
In addition, ScanDisk refuses to check the floppy disk.

To work around this problem, always reboot the system without the LANtastic terminate-and-stay-resident (TSR) programs before compressing floppy disks and don't explicitly mount a floppy disk while the terminate-and-stay-resident (TSR) programs are running. The product included here is manufactured by LANtastic, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Modification Type: Major Last Reviewed: 12/3/1999
Keywords: KB97573