permission problem on external USB disk

[Sébastien Hinderer]

Hi,

You may want to use the uid= and gid options in your /etc/fstab. You can
use them in replacement of dmask and fmask and give them the values
corresponding to your user.
A user can find out her uid/gid with the id command.
Alternatively (and perhaps this should be tried first), check that your
user belongs to the disk and plugdev groups.
Also have a look to figure out to which group the mount point belongs
and be sure the user belongs to this group.

hth,
Sébastien.