12.04 — The Disk Drive for /tmp is not ready yet. S to skip mount or M for manual recovery — Ask Ubuntu

you need update fstab. simple way:

1. Open terminal.(i say first terminal)
2. in terminal write sudo blkid.
3. every partition has an UUID,don’t close this terminal and go to 4.
4. right click on terminal and open Terminal or New Tab.
5. in new terminal(second terminal) write sudo gedit /etc/fstab.fstab file opens.
6. the UUID that appears in fstab should be same UUID that appears with sudo blkid.if any UUID in fstab differs ,you should copy it from first terminal on fstab.
7. save and exit .
8. restart to see result.

Hope this helps!

Источник: 12.04 — The Disk Drive for /tmp is not ready yet. S to skip mount or M for manual recovery — Ask Ubuntu.