## Using Your DDK

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### Virtual Disk Device Driver (MVDM Support)

Driver Description:

The Virtual Disk Device Driver provides virtual disk support for the MVDM environment. Most DOS applications access the floppy and the hard disk through the INT 13h interface. The Virtual Disk Device Driver supports only INT 13h accesses.

Compilers/Assemblers Required:

         Microsoft MASM 5.1      (supplied with the DDK)
         Microsoft CL386          (supplied with the DDK)

Build Instructions:

1.Set the environment variables so the correct tools are picked up during the build.

    e.g., SET PATH=<drive>:\DDK\TOOLS;%PATH%

Where <drive> represents your DDK installed drive and DDK represents the DDK installed directory. On the CD-ROM, the TOOLS directory path is DDK\ TOOLS.

2.Change the directory to DDK\BASE\SRC\VDEV\VDSK.

3.Invoke NMAKE on the resident makefile.

Files Created by Successful Build:

         Directory:  \DDK\BASE\SRC\VDEV\VDSK

         o  VDSK.SYS
         o  VDSKD.SYS