Windows 8 is installed on SSD#1. Ubuntu 12.04 is installed on SSD#2.
After installing Ubuntu, I'm unable to boot from GNU GRUB to the Windows 8. When I try it, Windows logo flashes for a second and computer restarts.
I managed to log to the Windows by changing disk boot priority (SSD#1-Storage HDD-SSD#2). It had to repair itself first though. (fortunately didn't need the disk)
I had no such problem when I was trying Fedora 19 two days ago.
How to I fix it so Windows 8 can be booted from GRUB? $ sudo update-grub should fix it? I'm kind of scared of messing up the W8 - took me a long time to configure everything.