I have a brand new Macbook Pro and here is the rundown. -I installed an OWC 240GB SSD drive as my boot -took my 500GB factory drive and installed it in the optical drive bay using an OWC Data Doubler -I created two partitions on the SSD and installed Lion on one partition -Lion is running fine. I installed Snow Leopard on the second partition. -When restarting, I can hold down the option key and see both partitions. I can boot into the Lion partition just fine, but when I try to boot into the Snow Leopard partition, it tries to boot and beeps three times. -after reading online, it seems like it could be a RAM problem. I took out the RAM and put it back in, took out one at a time, but it still beeps when I try to boot into Snow Leopard -ran memtest and everything checked out fine -I reset the PRAM and SMC, repaired permissions and repaired the disk. I guess it could be bad RAM, but the Lion partition seems to have no problem with it. Still showing 8GB in system profiler. sorry for the length...any suggestions?