Set user rw permissions to /live/image

[Alexandre Abbes <alexandre.abbes@ac-toulouse.fr>]

Hi
The version is squeeze version on live-build ( 2.0.12-1)

I have a live system on a vfat usb disk (/dev/sdb1)

When booting the live system on usb, the /live/image contains /dev/sdb1, 
mounted rw, only writable for root.

I would like to change the permissions at boot time, giving permissions 
rwx to my user to the whole disk /dev/sdb1.

But I do not know how to do,  the

# mount -o remount, umask=000 /live/image

fails even in a standard debian squeeze distro :

# mount
(...)
/dev/sdb1 on /mnt type vfat (rw,umask=7777)

#ls -l /mnt
drwxr-xr-x  3 root root      16384 11 nov.  23:25 Desktop
drwxr-xr-x 10 root root      16384 12 oct.  22:34 Divers_Doc
drwxr-xr-x  5 root root      16384  4 août  22:28 doc



Does anybody have a clue?

regards
Alexandre Abbes