[ubuntu] Hard disk failure in multiple boot system, how to remove non-existing systems

Hello,

One of my 2 hard disks died, taking with it the Windows operating system as well as some older Ubuntu versions.
I am using Grub to boot Ubuntu 12.04 and what used to be several windows distros are still in the boot menu.

I am happy this will be Christmas cleaning but how do I clean the grub menu? Installing Windows on a new hard disk
will automatically correct the menu? Because Grub asks me to manually skip mounting disks that are not mountable...

I would like to try the latest Ubuntu distro as well on the new hard disk.

Thanks for reading!
Happy holidays and best wishes,
Zuheyr