how to delete ubuntu and instal kali sana without crash "grub"

[debian-k]

i have windows 10 and Ubuntu 14.04 ,, I already try to install kali 2.0 but it crash grub and stuck in "grub resources mode"

i want to delete Ubuntu and replace it with kali without lose grub of windows and replace boot of Ubuntu with kali ??

now i come back to Ubuntu by format ,, but still need install kali and replace Ubuntu ?!

[duxim]

"i want to delete Ubuntu and replace it with kali without lose grub of windows and replace boot of Ubuntu with kali ??"
just from widows delete ubuntu partition.
leave those space as it is. unpartition
install kali but first read this post
https://forums.kali.org/showthread.p...-Kali-2-0-Sana

in a case to lose boot use
http://sourceforge.net/projects/boot-repair-cd/