This first occurred because of a bios update. The type is correctly set as RAID in the bios (mb: p8z68-v pro/gen3), but on 1st reboot after bios upgrade, only one of the two drives were set as raid member disks. I deleted & recreated the raid disk and booted into windows as my boot disk is a separate ssd disk.
When using TestDisk, it defaulted to EFI GPT as the partition table type, but a quick search under that type took about 72 hours(!) and only found deleted partitions. I switched this to Intel, and it found the correct partition immediately. I can also copy the found files to my thumb drive. So everything *seems* correct; I just can't seem to fully recover.
