Filling FOLDER-disks

     The integral compression ratio actually achieved by the concrete
FOLDER-disk might differ from the ratio which you have indicated while
creating the disk.

     In those cases when the actual compression ratio is considerably lower
than the ratio you specified at disk creating the system may continue to
show enough free space on the disk, while almost all sectors are, in fact,
used. If in such situation you try to load a file requiring more space than
is available, PTS-FOLDER automatically toggles into its own mode of
calculating free space, different from that used by PTS-DOS.

     While in this mode the PTS-FOLDER system calculates the volume of free
space by counting every actually free cluster accessible for data storage.
Such a mode is preserved for a  given  FOLDER-disk until the computer
reboot.