How to remove ubuntu and leave only xp and vista in my system

[skiabox]

I have a laptop that boots from an external hdd (partitioned in 2 parts).The 1st partition of the external hdd is ntfs and the 2nd is formated to ubuntu's filesystem.I want to get rid of ubuntu but how will I be able to boot my laptop again?
(laptop boots grub from external hdd and I must use grub's menu to go to xp/vista multiboot loader that's installed in laptop).Thnx!

PS : Vista is damaged so I can't load them.

 

[mqudsi]

Hiya skiabox,

All you need to do is
1) Use EasyBCD's "reinstall bootloader" feature (from XP or Vista)
2) Format the ubuntu drive

good luck!