How to create extended partition under Vista

http://blogs.technet.com/filecab/archive/2006/10/16/how-to-create-an-extended-partition-in-windows-vista.aspx

Brief: Under Vista Disk Management, unless you have 3 primary
partitions, you can not create a extended partition.

But you can use DiskPart tool to create extended partition under Vista.

ex:

I want to create a 110GB extended partition in my Disk 1 under Vista.

After launching DiskPart, I type:

select disk 1

create partition extended size=112640

## Note: the unit of size is MB.