Ubuntu – Is it possible to make Ubuntu ask for the password before mounting USB drives

for this purpose I'm using the following line in /etc/fstab and i've not done any modification in gnome... it works in ubuntu 11.04

# Prevent mounting specific partition on external hd
UUID=57f8f4bc-abf4-0000-675f-946fc0f9f25b none ext4 ro,noauto

there are two differences between my fstab and yours:

1. I use partition UUID instead of LABEL
2. I set 'none' as mount point

I don't know which is the difference that makes my config working, but I'd bet the second one..

(if you want to get the UUID of the partition you can use the command sudo blkid)

Ok, I found an article that explained why this wasn't working for me. I had all usb drives mounting under /media/<myusername>/<drive_name> and this made mandatory permissions on it. I unmounted the drive and set it to mount under /media/ then it works.