Hardware Compatibility with MS-DOS 6.22

4. Hardcard

If you upgraded your system from MS-DOS 6 or 6.2, your system
uses its Hardcard drive as its startup drive, and you want to use
DoubleSpace on that drive, see See below, part C.

For additional Hardcard information, see the following:

a) Hardcard II

   If you can't use Plus Development Hardcard II or Hardcard
   II XL when running EMM386.EXE, specify the exclude (x=)
   switch to prevent EMM386 from conflicting with the card's
   BIOS address.

   To configure EMM386, run MEMMAKER.

b) Hardcard 40 or Passport

   If you are using Hardcard 40 or a Passport removable
   disk, and you have a DEVICE command in your CONFIG.SYS file
   for PLUSDRV.SYS, disable or remove the DEVICE command.
   Then run MS-DOS 6.22 Setup. After Setup is complete, reenable or
   restore the DEVICE command for PLUSDRV.SYS. Make it the last line
   in the file.

c) If you upgraded your system from MS-DOS 6 or 6.2, installed DoubleSpace  
   on your Hardcard, and are now unable to access your
   newly compressed drive, try the following:

   1) Add a DRVSPACE /MOUNT command to your AUTOEXEC.BAT file to mount
      the compressed volume file on the Hardcard every time you start
      your computer.

   2) Or, ensure that there is at least one device driver (for example,
      ANSI.SYS) loaded in your CONFIG.SYS file AFTER the ATDOSXL.SYS
      driver but BEFORE the DRVSPACE.SYS driver.