mtools: location information
3.5.2 Location information
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For each drive, you need to describe where its data is physically
stored (image file, physical device, partition, offset).
`file'
The name of the file or device holding the disk image. This is
mandatory. The file name should be enclosed in quotes.
`partition'
Tells mtools to treat the drive as a partitioned device, and to
use the given partition. Only primary partitions are accessible
using this method, and they are numbered from 1 to 4. For logical
partitions, use the more general `offset' variable. The
`partition' variable is intended for removable media such as
Syquest disks, ZIP drives, and magneto-optical disks. Although
traditional DOS sees Syquest disks and magneto-optical disks as
`giant floppy disks' which are unpartitioned, OS/2 and Windows NT
treat them like hard disks, i.e. partitioned devices. The
`partition' flag is also useful DOSEMU hdimages. It is not
recommended for hard disks for which direct access to partitions
is available through mounting.
`offset'
Describes where in the file the MS-DOS file system starts. This is
useful for logical partitions in DOSEMU hdimages, and for ATARI
ram disks. By default, this is zero, meaning that the file system
starts right at the beginning of the device or file.