I have a same problem with LSI 9240-8i & GA-MA790FXT-UD5P , tried every possible solution, last beta bios F8M is from 2010/11/10 and I feel like using abandonware. I read that few other mainboard manufacturesrs got similar problem and they say the bios rom is too small to modify it to work properly with LSI and other PCI-Ex8 Raid cards. Mybe they say truth but my mobo bios is 1024kb where 300-400kb is wasted for useless start bios logo !!!
It is really impossible to implement correctly or this is just an excuse ? I have 2 options right now :
1. Buy new AM3+ mobo, that will be verified to work with LSI card and I'm sure it will not be Gigabyte mobo famous for the lack of compatibility with Raid cards, Asus works most of the time and MSI almost always works for sure.
2. Sell this card and stay with limited 6x AMD SATA ports - 4 x JM322 ports are useless to me, Raid0 is slow and problematic on this ports (capped to 150mb), useless for DVD, BD-ROM.
regards apatch