Ubuntu-Windows 7 dual boot, windows broken

Question

And I'm considering reinstalling windows 7, should I remove ubuntu beforehand?

http://answers.microsoft.com/en-us/windows/forum/windows_7-system/black-screen-before-login-after-installing/ca7e7876-1b1d-4cd1-aceb-d69a8eafdd10

Answer 1

• you dont need to remove ubuntu.You can just delete the windows partition on ubuntu and reinstall windows on the same partition.

• To delete a windows partition,you need to install gparted partition editor on ubuntu.Run the below commands on terminal to install gparted,

  sudo apt-get install gparted
  

• Open gparted ,locate the windows7 partition and format it to ntfs filesystem.

• Then bootup the windows-live-disk.During windows installation select the custom option and then select the ntfs partition you formatted it on gparted and install windows to it.

Answer 2

Last time i was in the same situation , So if you delete windows partition it will affect grub for sure, actually in my case that happened . Then you have recover it as mentioned by guru prasad.

So re-installing both is better , before deleting both the OS do-

1. Backup home

2. open /var/cache/apt/archive and copy all the .deb files somewhere else after re-installing Ubuntu , copy them to the same folder and install your software’s by normal apt-get install it will use those .deb files and little from internet to install.