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