> The second problem is :
> >> how to mount the D:, E:, F:, G:, (logical disque in msdos language), and
> >> eventualy how to view the extend msdos partition?
> >
Okay, say your msdos partition are on you first harddisk (and ide).
Then type: mbrlabel wd0
After that you'll type disklabel wd0
Then you'll get an overview of what partitions you can mount.

Mount them with mount -t msdos /dev/wd0e /dosd
Where wd0e is a logical partition and the dir where it is mounted to is
dosd.
Bye,

Reinoud.