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install apt-fast

I managed to fix it myself, but how I did it is what I am not sure of.

This were the things I did,

Booted into kali
Reintalled grub (apt-get install grub)
restarted my machine and booted into...

Please, How do I install grub2 and manually configure it to recognise windows 7 and ubuntu 12.10 and Kali-linux? I could have sticked with just grub that came with Kali, but my machine enters into...

thank you, very helpful