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11 Jul 2010  
gregrocker
Microsoft MVP

 

Please post back a screenshot of your full Disk Management drive map, using SNipping Tool in Start Menu.

An OS can be installed to a Logical partition, but it's boot files cannot be on a Logical partition.

If your System Active dual boot files for XP/Vista are located on SysReserved partition then Vista should update those files for a multi-boot, and thus not require being on a Primary partition to boot from.

But we can't know for sure until we see screenshot. You may want to get rid of a useless utility partition or convert a data partition to Logical so you can make use of all 4 Primary partitions allowed.

What is the exact error message you are receiving when you attempt to boot Vista DVD to install to the Logical partition you've created?
My System SpecsSystem Spec