DoubleSpace Conversion Kit: Description & How to Obtain

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Description

The DoubleSpace Conversion Kit provides the DRVSPACE.MR1 file. If you used MS-DOS 6 or 6.2 before installing MS-DOS 6.22, the DRVSPACE.MR1 file enables MS-DOS to read data stored in the DoubleSpace compression format even if the DoubleSpace driver (DBLSPACE.BIN) is not loaded in memory.

DRVSPACE.MR1 makes it possible to:

• Convert DoubleSpace-compressed drives to DriveSpace format.
• Use DriveSpace to mount and read DoubleSpace-compressed drives.
• Use MS-DOS 6.22 ScanDisk to check and repair DoubleSpace-compressed drives and compressed volume files (CVFs), even if DBLSPACE.BIN is not loaded in memory.
• Use MS-DOS 6.22 Backup for MS-DOS to restore backups created with MS-DOS 6 or 6.2 Backup for MS-DOS or Windows, even if DBLSPACE.BIN is not loaded in memory.

IMPORTANT: DRVSPACE.MR1 works in conjunction with the MS-DOS DBLSPACE.BIN file. If you did not install MS-DOS 6.22 over MS-DOS 6.0 or 6.2, you do not have the DBLSPACE.BIN file.

If you did not install MS-DOS 6.22 over MS-DOS 6.0 or 6.2, you can obtain the DBLSPACE.BIN file from online services. For information about obtain- ing the DBLSPACE.BIN file, please see the following article in the Microsoft Knowledge Base: For information about converting DoubleSpace-compressed drives to DriveSpace format, type "help dblspace" (without the quotation marks) at the MS-DOS command prompt after you upgrade to MS-DOS 6.22, and then choose the Notes button.

Availability of the Dblconv.exe File

The following file is available for download from the Microsoft Download Center:
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base: Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.

You can also:

• Fill out and return the form included in your MS-DOS 6.22 Upgrade package.
• Call the Microsoft Sales Information Center (MSIC) at (800) 426-9400 and order the Microsoft DoubleSpace Conversion Kit.

Installation Instructions

To install the DoubleSpace Conversion Kit, follow these steps:

1. Copy the DBLCONV.EXE file to a blank floppy disk.
2. Change to the floppy disk drive by typing A: or B: at the MS-DOS command prompt.
3. Run DBLCONV.EXE by typing dblconv at the MS-DOS command prompt.
   
   DBLCONV.EXE extracts the compressed files and stores them in the root directory of the floppy disk.
4. Run SETUP.EXE by typing setup at the MS-DOS command prompt.
   
   Setup installs the DoubleSpace Conversion Kit on your hard disk.
   
   NOTE: The Setup program must be run from a floppy disk.