Yesterday, I had RAID installed on my computer with Windows 7. I deleted the RAID so it would wipe both drives, and then installed Ubunutu on the first HD. Today, I went into Ubuntu, used Gparted to partition the second HD so I could have Windows 7 on the second. After I finished instlling Windows 7 on the second drive, it does not give me the option to pick Ubuntu or Windows 7 on startup. Is it not showing because its starting the second HD on startup by default and not the first? I would really like to know how I can boot back into my Ubuntu. Thank you.
From this link: http://ubuntuforums.org/showthread.php?t=1035999
4) Re-install GRUB
Now you have windows 7 but it has completely eaten your boot loader so you need to re-install grub. Boot from the ubuntu live cd and go to terminal. Type in terminal:
sudo grub grub> find /boot/grub/stage1
That should return your Ubuntu partition in the form of (hdX,Y), use that:
grub> root (hdX,Y) grub> setup (hd0) grub> quit