
  Problem  : Losing access to the CDROM in a compression environment when
             exiting Windows in PC DOS 6.1.

  Solution : DBLSPACE.BIN

  This DBLSPACE.BIN fixes the problem users encountered when running Windows
  and using a CDROM.  When users exited Windows, the CDROM could no longer
  be addressed.

  Problem   : The carry flag is incorrectly reset on a int 21 function
              36 ( Get Disk Free Space) on systems with DBLSPACE
              installed. This causes some AS/400 PC utilities to fail.

  Solution  : DBLSPACE.BIN (APAR 25149)

  This file is supplied and supported by IBM.


To use the new DBLSPACE.BIN file, follow the procedure below:

A) Unhide the existing DBLSPACE.BIN in the root of the boot drive with the
   ATTRIB command.  If you have compressed drive C, also unhide the
   DBLSPACE.BIN in the root of drive C.

   Ex:   ATTRIB -r -h -s \DBLSPACE.BIN

B) COPY the current DBLSPACE.BIN to a safe place.

   Ex:   MD  \SAVE
         COPY \DBLSPACE.BIN \SAVE

C) COPY the new DBLSPACE.BIN on top of the old one, in all the locations
   you unhid DBLSPACE.BIN.

   Ex:   COPY A:\DBLSPACE.BIN  \

D) Re-hide the new DBLSPACE.BIN file with the ATTRIB command in all locations.

   Ex:   ATTRIB +r +h +s \DBLSPACE.BIN

E) Reboot the machine, you're done.

