Comment 10 for bug 26058

When installing my system I went through this bug.

The problem is that certain version of windows want to write something on the boot sector if you're using "dynamic disc" (I don't know the proper english term for this windows feature).

And if grub is installed on this hard drive it get broken. I'm not sure that this can be fixed as it is a windows problem. The solution I used is to install Linux on the first hard drive and windows on an other (since this problem involve many hard drives as dynamic drives cannot be shared across multiple OSs), and used the map feature of grub to let windows boot (since I instaled it first with only one drive, then I plugged an other and installed linux) on the second hard drive (without grub) and believe that it is the first.

I don't know if it is exactly the same bug here, but maybe it will help.