FIXMBR will probably break GRUB. You will need to boot from a Linux
CD/DVD/floppy and reinstall the GRUB bootloader.

--
Kerry Brown
Microsoft MVP - Shell/User
http://www.vistahelp.ca


<happymac.support******.com> wrote in message
news:1175565864.236516.134620@e65g2000hsc.googlegr oups.com...
> I'm no expert, but if I deleted the Vista partition, when I chose to
> boot Windows from GRUB, wouldn't it read XP's boot.ini and boot
> straight into XP?
>