Suse 12.3 GRUB2 single user mode

Suse Linux 12.3 came with GRUB2 which has different configuration files and other things
To go into single user mode from graphical menu:

1) press "e" to edit startup entry

2) this screen will appear:

3) scroll down and add "single" on this line:

4) finally press F10 key to confirm and boot