Crossbow7 - spot on. I want to return the HDD to it's original state so need to remove GRUB. Normally it's easily done with fixmbr/fixboot but that needs an optical drive. I will try the bootable USB method in the link. Thanks for your help.
In previous releases of Kubuntu they included a utility to rewrite the mbr but that seems to have disappeared in v10.10.
I had wondered about using fdisk/mbr from within Kubuntu but I think I'd prefer the XP method.
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