 RAWDISK.SYS is a DOS device driver, that maps an arbitrary portion
of a harddisk (given by a start cylinder/sector and end cylinder/
sector) onto a logical DOS drive. The HD area is accessed (read or
written) through a regular DOS file. Logical drive administration
areas (bootsector, FAT and rootdirectory) are totally virtual, hence
no additional HD space and memory is required.

 The primary intention for this device driver is to get logical
access to harddisks and partitions which are in any way foreign to
DOS, to enable the usage of any DOS based backup software (including
the simple COPY command :-) for making image backups of this HD area.
The general approach of this driver, however, makes it possible to
use almost any useful DOS utilities to manipulate the HD area.

 I recommend reading the documentation carefully. This is especially
true, if you use this driver with a partitioned disk or with a disk
that has more than 1024 cylinders or 63 sectors or 16 heads, because
it is easy to destroy the contents of the whole disk using this
driver inappropriately.

Juergen Prang	(jprang@uni-duisburg.de)
