I would be very leery of saving the bios settings to a harddrive. I did some research on this and it looks like the data is saved in the small unpartitioned space at the end of the drive. If this is the case big problems may result. Especially if using a SSD as the board may be dumb enough to try to write to the spare area. Unless proved otherwise I'd stay far far away.
Hmmmm, I could've swore I saw a an option to save it to a specific file. Yeah, just checked, and there's a file called "SAVEDBIO" on the flash drive I had the BIOS update on.