Mount for normal user

[Sami Dalouche <samid@ifrance.com>]

How can I mount devices (CDrom / HD) as a normal user.
For example :
$ mount /dev/hdb /mnt/hdb

mount: only root can mount /dev/hdb on /mnt/hdb

I've tried to add my user (sami) to some groups, but... :

sys:x:3:sami
adm:x:4:sami
disk:x:6:sami
lp:x:7:lp,sami
mail:x:8:sami
voice:x:22:sami
cdrom:x:24:sami
floppy:x:25:sami
sudo:x:27:sami
audio:x:29:mary,sami
majordom:x:31:majordom

Where is any help about Debian's groups... ?

However, How to remove user from groups (without VI) and is there a way to
have all root permission without being root (UID 0) because some programs
don't want to run as root ?

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