Asus Motherboard P5MT-S - Manual (Page 146)

5-46 Chapter 5: RAID configuration
3. When a confirmation dialogue box
appears, select <Yes>, then press
<Enter> to delete the spare drive.
4. Press <ESC> to exit the utility.
2. The screen displays the available spare drive(s). Use the arrow keys to
select the spare drive you want to delete, then press <Enter>.