This information applies to both Microsoft DoubleSpace and Microsoft
DriveSpace. For MS-DOS 6.22, use DRVSPACE in place of DBLSPACE for
commands and file names.
The [SpecialFiles] section of the DBLSPACE.INF file was designed to
designate individual files that should not be compressed (with wildcard
functionality [such as the * character] built-in). Thus, files only (not
directories) are recognized in the [SpecialFiles] section.
In the DBLSPACE.INF file, if you want to exclude an entire directory and
all of its subdirectories from being compressed, you must first specify the
top-level directory and then specify each subdirectory separately. For
example, if the following directory tree structure exists before
the following lines must be added to the [SpecialFiles] section of
DBLSPACE.INF to exclude the TEST directory and its subdirectories:
Files Without Extensions Are Still Moved
Files that do not have an extension and are located in a directory
specified by an IGNORE statement are still moved to the compressed drive.
For example, if you have a directory of all Windows for Workgroups 3.11
files and you specify in the DRVSPACE.INF to IGNORE this directory, the
following files are still moved:
DISK1, DISK2, DISK3, DISK4, DISK5, DISK6, WINVER, DISK7, DISK8
This problem occurs only with files that do not have an extension. Files
that include an extension of one or more characters are not moved.
Microsoft has confirmed this to be a problem in MS-DOS versions 6.0, 6.2,
and 6.22. We are researching this problem and will post new information
here in the Microsoft Knowledge Base as it becomes available.
DBLSPACE.INF Does Not Recognize More Than 18 Ignore Statements
DoubleSpace does not recognize more than 18 IGNORE statements in your
DBLSPACE.INF file. Subsequent IGNORE statements are not processed.