Hi Guy's. I have had a lot of problems since I installed onto my USB Hard Drive. My hard drive got mangled and I am stuck with Grub interfering with my Win XP boot.

I have backed up my MBR and using the Knoppix 'Live' cd have entered the following.

dd if=/dev/null of=/dev/hda1 bs=446 count=1

I thought that this would remove Grub and leave me with a clean MBR. But I keep getting refered to the dd--help files which are not being a whole lot of use to me.

Could one of the knowlegeable members please tell me if I have written this command correctly and if it is the right one to get rid of Grub from my MBR. Much appreciate any help you can give me on this. It is more than a bit worrying. Thanks Grandad Walt