I've tried the LSI 21320-IS on my other computers (all Dell) and it gets detected -- I know this because the LSI bios screen shows up during startup.
On my Gigabyte P35-DS3L all I get is: "disk boot failure, insert system disk and press enter"
I reflashed the LSI adapter with LSI 21320-R firmware, which according to other forum topics allows me to run this beast on non-dell systems (Fusion-MPT_IS_FW10327_BIOS_51101_FLASH_10304.zip at LSI website), but to no success.
Does anyone have any other ideas? Thanks for the help