Given a dual partition of Ubuntu 12.04 and Windows 7 - both 64 bit operating systems and a working version of GRUB: I need to be reminded of what will happen upon reinstallation of Windows 7 on the Windows partition in terms of GRUB.

Will GRUB be wiped?

I am concerned about this. I know that GRUB is installed on SDA currently, and the only way I could get it to be installed on SDA was through the process of firstly installing 10.10 selecting SDA from the Bootloader drop down. For someone reason I could not select SDA when using 12.04;

In summary:

1- Will GRUB be wiped?
2- If so, can I FORCE grub to be installed to SDA /boot no matter what?