The DBLCONV.EXE file contains a downloadable version of the
Microsoft DoubleSpace Conversion Kit. 

DBLCONV.EXE is a self-extracting executable file that contains
the following files:

   DRVSPACE.MR1
   README.TXT
   SETUP.EXE

DoubleSpace Conversion includes a single (but important) file: 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, even if the
   DoubleSpace driver (DBLSPACE.BIN) is not loaded in memory.

 * Use MS-DOS 6.22 Backup for MS-DOS to restore backups created
   by MS-DOS 6 or 6.2 Backup for MS-DOS or Windows, even if the
   DoubleSpace driver (DBLSPACE.BIN) is not loaded in memory.

Note: DRVSPACE.MR1 works in conjunction with the DBLSPACE.BIN file,
      so both files must be located in the same directory.

For information about converting DoubleSpace drives to DriveSpace format,
type HELP DBLSPACE at the command prompt after upgrading to MS-DOS 6.22,
and then choose the Notes button.