Re: [mtools] FAT count

[Alain Knaff]

On Wednesday 30 April 2003 22:01, Robb Main wrote:
> Is there no way to force a single FAT (instead of the two 'normal') when
> creating a filesystem image file?
> What are the ramifications of forcing a single FAT (i.e. does this cause
> any problems with any versions of DOS, or DOS utilities, etc.)?
> Thanks,
> Robb Main.
>

In today's patch (20030524), there is now a new -d option in mformat,
with which you can indicate the number of fats:

For example, the following command will format an 1440 disk with only
one FAT:

 mformat -d 1 -s 18 -h 2 -t 80 a:

The same exect can be achieved by setting the MTOOLS_NFATS environment
variable:

 export MTOOLS_NFATS=1
 mformat -s 18 -h 2 -t 80 a:

The environment variable is useful in situations where you have no
direct control over mformat's commandline, such as is the case when it
is called via another program (syslinux, etc.). A similar variable
exists for the root directory size (MTOOLS_DIR_LEN):

 export MTOOLS_NFATS=1
 export MTOOLS_DIR_LEN=1
 syslinux /dev/fd0

Regards,

Alain


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