Ubuntu boot problems

One of the Ubuntu machines I have, today woke up in the bad mood.
The boot failed ending in a BusyBox splashscreen :

Busybox v1.1.3 (debian 1:1.1.3-5ubuntu12) Built in shell (ash) Enter 'help' for a list of built-commands

The problem is relatively simple, the hard drive screw up a little bit.
Many suggestions found on the net suggested to boot in Windows, do a check of the disk and re-boot.
That's nice if you have Windows installed somewhere.

For who, like me, doesn't have Windows nor even think about to install it, here a simple workaround.

1. Look for a live Linux distro and boot the PC with it
   I used Knoppix.
2. Look for GParted (Disk partition utility)
3. In GParted look the drive (hard drive), select it, choose "check"
4. When the check is finished, reboot normally

It should work.

It worked for me anyway :-)