I need to remove opensuse, i tried formatting the partition it is on, resulted in grub boot erro, reinstalled linux, can boot again, but want to remove from system!! How do i go about it with resulting in a no boot, paperweight situation!! I have no install disc, i didnt get one with my laptop - it had vista preinstalled. There is the techguys recovery, but to get to that i need to abort a bootup when the laptop is actually loading windows, obviously i cannot get to this stage without grub working!!

1.First of all format u r linux partition.
2.When u reboot the system it shows the grub error and windows wont boot. Pop in u r windows repair cd and boot from it. Enter repair mode.
3.When u enter repair mode u will be taken into command prompt.
4.At the command prompt type this command without quotes "fixmbr"
This should overwrite your mbr and rewrites the windows boot record.You should be able to boot into windows safely.

I assume from your post that you were booting vista and Opensuse from Grub. After formatting the Opensuse partition, you got a Grub error becaus over 99% of the Grub bootloader was on the partition you formatted. If you want to boot just vista you need to use your vista install/recovery CD to install the vista bootloader to the mbr. You could download EasyBCD to help you with this:

http://neosmart.net/dl.php?id=1

Or, you could go directly to the source:

http://support.microsoft.com/kb/927392/en-us

Well maybe not over 99%, but a lot anyway

Many people seem to think that you somehow "uninstall" an operating system. I haven't met such an operating system yet..maybe because if an operating system was a piece of software you could uninstall, what would you then call the thing it was installed on? Operating operating system?

You remove any operating system (that I'm aware of) basically this way:
- if it uses a bootloader that does not work without it, install a bootloader that can boot your other operating system
- after you can boot your machine independently of the OS-to-be-removed, format or delete the partitions that the OS-to-be-removed occupies
- re-use the formatted or now empty disk space for your other operating system

In the case of Windows people usually want the Windows bootloader back. For that they usually need to use the Windows Recovery Console available at the Windows installation media -- or if it's not available (not everybody has Windows installation discs anymore), you can seek the web for the Recovery Console alone. I remember seeing a download place where somebody had put a small disc image (that you could write to a CD-R and get a bootable Recovery Console disc) that looked like Windows installation disc but only contained the parts needed to run RC. Then there's also Super Grub Disk if you can't find anything else