Hi
I am having the same problem on the first try all was ok loader came up, i hade the option screen linux or windows I tried both OS rebooting each time but on the 3rd try when I wanted to go back to linux I had no bootloader any more it booted automatically to windows. I asked a co-worker and he said try a live cd an choose rebuild bootloader
open a terminal like Konsole or the Gnome Terminal
type grub
type root (hd0,0)
This assumes that your suse partition is hda1. You have to trade the letter and number for two numbers separated by a comma, and they begin with 0, not 1. Hope that makes sense. If not, just google “man GRUB”.
type setup (hd0)
This assumes that your drive is hda. Do not include a partition number.
type quit
It should boot into GRUB when you reboot, but without the ability to boot windows.
Now sudo edit (use the editor of your choice - I like nano for quick and dirty work)…
sudo nano /boot/grub/menu.lst
Add this entry to the end:
title Windows
root (hd0,0)
makeactive
chainloader +1
where root refers to the Windows partition using the convention described above.