Asus P5W - Manual (Page 182)

5-5 Chapter 5: Software support
9. Assign a drive letter or drive
path to the partition.
Click Next.
11. The New Partition Wizard
displays the file system
settings. Make sure the
settings are correct.
Click Finish to create the
partition; otherwise, click
Back to make the necessary
changes.
10. Name and format the
partition.
Click Next.