This reg key will enable the ability to boot from MegaRAID storage devices using the megasys2.sys driver. Useful to run before hand when upgrading or otherwise changing hardware to something with a LSI 9260, 9271 or similar card. This reg key REQUIRES that you already have the correct megasas2.sys driver installed one way or another.
Mass storage driver is the best thing I have ever had. Thank s alot for the person who made it.