How to boot a win 7 hard drive that was in Ubuntu system?

[Xen]

Ralf Mardorf schreef op 07-04-2017 17:30:
> Now that it's solved, the Microsoft support hopefully is finished.
> Please, don't add more comments.
> 
> This is one of the three longest threads this month, see
> https://lists.ubuntu.com/archives/ubuntu-users/2017-April/date.html .
> 
> The other two threads are related to Ubuntu and Linux and about far
> more complicated topics, not something that trivial as the Microsoft
> issue.

But Ralph, wasn't it also about ensuring Grub would not get overwritten?

I guess I was mistaken. Peaceful co-existence is a core value though.