Help required!
I need to Skip by typing "S" to go to login screen in ubuntu 3.0.0-17-generic. Inside my account everything is fine, three hdd are mounted.
One for the system and swap and two others for data. The only thing interesting is : seeing by Disk Utility there is one of the disks formated to ext4 but Not Partitioned! Is this the problem for skiping process?
Thanks in advance!

You need to provide more detailed info. A screenshot maybe.
More than 90 views and no answers - I am not the only person who doesn't understand your post.

To more accurate this is in boot screen:
an error occurred while mounting 0
pres S to skip mounting or M for manual recovery

Is there in fstab file smth wrong?
# /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=63fd695a-ddc4-488b-a33d-62f3d4cfee8c / ext4 errors=remount-ro 0 1
# swap was on /dev/sda5 during installation
UUID=a949c3c0-b021-42f4-b4b2-89dcfa6c0fdf none swap sw 0 0
/dev/sdb1 /media/160GUB ext4
defaults 0 0
/dev/sdc /media/500GUB ext4 defaults 0 0

Ok, I found it by myself after trying a little bit with disktools. Looking at fstab, I compared two hdd-s, i.e /dev/sdb1 and /dev/sdc.
I saw where the fault was ....! It was simple afterwards, it must be /dev/sdc1. This is all.
Anyway, thank you for helping me, saying that in the biginning what I wrote, wasn't sufficient!