Windows 7 unattended install and disk/partition wiping

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http://serverfault.com – Im currently having a problem when trying to setup an unattended install of windows 7. When the hard drive has no partitions the install goes fine. However if the hard drive has any existing partitions, it throws up an error message saying it can't create new partitions. So I end up having to launch a live CD and delete the partitions before doing the unattended install. I don't think the WillWipeDisk does its job. Can an unattended install file wipe the existing partitions on a drive and then create the new ones listed in the unattended file? Below is the Disk Config portion of the XML: &l (HowTos)