I need help from you wonderful folks. First off, complete Linux noob here (been on openSUSE 11.3 only for about a week now)
ok here’s how it goes:
- installed openSUSE11.3 first and then
- installed puredyne as 2nd OS (multi-boot)
grub from puredyne now boots instead of grub from suse.
The thing is puredyne doesn’t work (seems like Ubuntu-based distros don’t want to run on my hardware). Now i want to delete it. How do i go about doing this and restore the grub from SUSE? (tried deleting/formatting the partition in which dyne was installed but that just messed up the grub upon bootup (showed “grub recovery” prompt at boot)
So how do I remove puredyne distro and recover the grub for SUSE?
You need to use the Suse install to re write the MBR. Ub* based distros are using the new Grub 2.0 but Suse still uses the older legacy Grub.
I think you already removed the puredyne when you deleted/formated it’s partition. 
There’s a GUI configurator in Yast. Go to Yast → system → bootloader. The Grub configuration screen comes up with the Tab “Section Management” activated. In the lower right is a drop-down selector labelled “Other”. Select from “Other” the option “Propose New Configuration” and then wait for Grub to analyse your partitions and display a new configuration. This may take a while. Important: When that finishes, activate the tab labelled “Boot Loader Installation” and select to “Boot from the Master Boot Record”. [Yast will often default to booting from the root or boot partition rather than from the MBR but that’s for experts only – always choose the MBR.] Then click Finish to save the changes and install the reconfigured Grub into the hard drive’s MBR. If you get a message that "The bootloader boot sector will be written to a floppy disk … don’t bother with the floppy – just click OK to proceed and install to the MBR. Reboot and you should be able to boot to openSUSE using the Grub menu screen.
Reference: GRUB Boot Multiboot openSUSE Windows (2000, XP, Vista) using the Grub bootloader.
Since as I understand the OP eliminated the UB* partition It would bork the boot entirely. So he would need to boot from a CD version to get to yast. If he installed Suse with a DVD he would need to go back and do a repair on the MBR.
Thanks for the reply folks. I’m gonna try this later.
Fixed. Thanks gogalthorp and swerdna.