VHDD Driver

Purpose:   Accelerates read-write operations with harddisk.

Syntax:    DEVICE = [drive:][path]VHDD.sys [Mxx] [Nyy] [D]

Parameters:

   D   - permits 32-bit data transfer;
   Mxx - sets the block size for operations with first harddisk
         equal to xx sectors;
   Nyy - sets the block size for operations with second harddisk
         equal to yy sectors.

                              Installation:

     Run the VHDDTEST program before installing the driver. This program
tests the driver's low level compatibility with your hardware, estimates the
optimum block size for data transfer and checks whether it is possible to
arrange fast (32-bit) transfer. As the result the command displays the
optimum VHDD parameters for your computer.

Example:

Suppose the VHDDTEST has recommended keys M8 D after testing the first
harddisk and N4 D after testing the second one.  You should then write the
following string in CONFIG.PTS(CONFIG.SYS) file:

     DEVICE = C:\PTSDOS\VHDD.sys M8 N4 D

     If you do not use VHDDTEST and do not specify any keys in the string
above, the fast testing will be performed and parameters will be assumed by
default.