Updating to Windows 8 on dual boot with Ubuntu

Solution 1:

You can upgrade Windows, and then restore the bootloader.

1. Upgrade Windows as necessary. (Sorry, but we can't help with the specifics here)

2. If Ubuntu does not boot, insert the Ubuntu installation CD and boot from it.

3. Open the terminal and run

   sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
   

4. Keep the terminal open and run:

   sudo apt-get install -y boot-repair && boot-repair
   

5. Follow the on-screen instructions. Do recommended repair, and remember the boot-info link it gives, in case there are deeper problems. If you do not have internet in the live CD, you can use the ISO here.