If XP was installed first on the primary system partition then you cannot format that partition without losing the ability to boot Vista as well. If that's the case you'll need to reformat the partition from outside of Windows (you can do so from your XP CD, Vista DVD, or third-party bootable disc), then click here for a quick guide to repairing Vista's bootability.
John
Hi,
I've been working with Vista for a while now and, for space reasons, I need to uninstall XP from my machine.
I tried to use the Disk Management tool on Vista with no result.
I Also tried to use diskPart, using the "override method"; (I input "delete partition override") with no result.
How can I format the partition containing XP?
Thanks in advace.

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