Dank Ivo voor je reactie.
hier de fstab info:
acc@ubuntu-10-04:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
# / was on /dev/sda1 during installation
UUID=78a6aeb5-6662-41a4-83db-c585a5c3a820 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda5 during installation
UUID=75ff9a44-f71b-49ae-9f6b-eb342a0c9425 none swap sw 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0
#
# zelf toegevoegd om tweede hdd aan te koppelen
/dev/sdb1 /home/acc/xtra ext4 auto,rw,user,owner
Hopelijk ontdek je wat ik zou moeten aanvullen.