MSI X2-109 v1 - Manual (Page 52)

3-18 MegaRAID BIOS Configuration Utility
Version 2.0 Copyright © 2006 by LSI Logic Corporation. All rights reserved.
To clear a storage configuration, follow these steps:
1. On the Management Menu, select Configure
→ Clear
Configuration.
2. When the message appears, select Yes to confirm.
All logical drives are deleted from the configuration.