mtools: miscellaneous variables
3.5.5 General Purpose Drive Variables
-------------------------------------
The following general purpose drive variables are available. Depending
to their type, these variables can be set to a string (precmd) or an
integer (all others)
`fat_bits'
The number of FAT bits. This may be 12 or 16. This is very rarely
needed, as it can almost always be deduced from information in the
boot sector. On the contrary, describing the number of fat bits may
actually be harmful if you get it wrong. You should only use it if
mtools gets the auto-detected number of fat bits wrong, or if you
want to mformat a disk with a weird number of fat bits.
`codepage'
Describes the DOS code page used for short filenames. This is a
number between 1 and 999. By default, code page 850 is used. The
reason for this is because this code page contains most of the
characters that are also available in ISO-Latin-1. You may also
specify a global code page for all drives by using the global
`default_codepage' parameter (outside of any drive description).
This parameters exists starting at version 4.0.0
`precmd'
On some variants of Solaris, it is necessary to call 'volcheck -v'
before opening a floppy device, in order for the system to notice
that there is indeed a disk in the drive. `precmd="volcheck -v"'
in the drive clause establishes the desired behavior.
`blocksize'
This parameter represents a default block size to be always used
on this device. All I/O is done with multiples of this block size,
independently of the sector size registered in the file system's
boot sector. This is useful for character devices whose sector
size is not 512, such as for example CD-ROM drives on Solaris.
Only the `file' variable is mandatory. The other parameters may be
left out. In that case a default value or an auto-detected value is
used.
Info Catalog
mtools: open flags
mtools: per drive variables
mtools: miscellaneous flags