[solved] Permissions issue - can't mount usb device as user, just root

Question

In my last post I learned how to mount a secondary HDD from the command line.  Problem is I did it as root. Now I have xfce4 running and I need mount permissions as user.
Here's my fstab:
[dennis@archlinux media]$ cat /etc/fstab
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
devpts /dev/pts devpts defaults 0 0
shm /dev/shm tmpfs nodev,nosuid 0 0
#/dev/cdrom /media/cd auto ro,user,noauto,unhide 0 0
#/dev/dvd /media/dvd auto ro,user,noauto,unhide 0 0
#/dev/fd0 /media/fl auto user,noauto 0 0
/dev/sdb /media/disk0 ext4 rw,user,noauto 0 0
/dev/sdb1 /media/disk1 ext4 rw,user,noauto 0 0
/dev/sdb3 /media/disk3 ext4 rw.user,noauto 0 0
UUID=1f813152-615e-41a1-b3e7-ce2b5b6836a5 / ext4 defaults 0 1
UUID=aba18f0f-5f37-4ab0-8241-5a271dc3dddb swap swap defaults 0 0
UUID=c4332450-df9e-4571-8256-8e1b10b4d162 /home ext4 defaults 0 1
UUID=f0a6eca0-9668-454b-b444-371566663510 /boot ext2 defaults 0 1
[dennis@archlinux media]$
....and these are the system messages I got when I plugged the device:
Unable to mount "74G Volume":
mount: only root can mount /dev/sdb3 on /media/disk3
Unable to mount "4G Volume":
mount: must be superuser to use mount
What do I do here?
Last edited by dennola4 (2010-06-28 00:56:51)

Answer 1

Karol:
# Cmnd alias specification
# Defaults specification
# Runas alias specification
# User privilege specification
root ALL=(ALL) ALL
dennis ALL=(ALL) ALL
%users ALL=(ALL) NOPASSWD: /usr/sbin/pppd
%users ALL=(ALL) NOPASSWD: /usr/sbin/hibernate
%users ALL=(ALL) NOPASSWD: /usr/sbin/standby
# Uncomment to allow people in group wheel to run all commands
%wheel ALL=(ALL) ALL
# Same thing without a password
%wheel ALL=(ALL) NOPASSWD: ALL
# Samples
# %users ALL=/sbin/mount /cdrom,/sbin/umount /cdrom
# %users localhost=/sbin/shutdown -h now
Mr. Elendig:
Why not use automounting instead?
To install Arch packages I needed an Internet connection, which required use of a Sierra Wireless card, which required chatscripts stored on another filesystem.  In my first Arch forum post ever, the one preceding this one, I learned to mount a device by creating a mountpoint in /media then invoking #mount.  After installing all packages and creating a user name, I signed on with xfce4 and plugged in the usb device again.  It didn't mount.  So I did it manually using sudo.  Since that worked I had the idea that adding the mountpoints to /etc/fstab would be useful, so I did.  When that didn't work I decided to just ask for help.
So sure, I'm down for some automounting action.  How do I do it?