No root passwd available for booting into Single mode

[Mark C]

Hi,

For some reason, I entered the second option down in the Grub menu and 
started Ubuntu up in single user mode (the singel or 1 option passed to 
the kernel), as usual I get asked to enter the 'Root' password, then I 
stopped an realised there isn't one.

I tried entering mine, just incase this mas been patched, nope!,
so I tried numerous options, and just ended pressing Contrl-D and 
booting up as normal.

Has anyone managed to get a workaround for this, without setting the 
root password?

Mark