File auto.master:
/mnt    /etc/auto.misc --timeout=60
File auto.misc:
usbkey          -fstype=auto            :/dev/sda
Directory /mnt is created and autofs daemon seems correctly started as status 
display:
...
Configured Mount Points:
------------------------
/usr/sbin/automount --timeout=60 /mnt file /etc/auto.misc
Active Mount Points:
--------------------
/usr/sbin/automount --pid-file=/var/run/autofs/_mnt.pid --timeout=60 /mnt 
file /etc/auto.misc
...
But automount don't work.
However a manual mount of /dev/sda works fine, so how to automount it ?.
Thanks for any clue.
Bruno