Corvair
Learning Storage Performance
The X86 "PC" platform has evolved greatly since its inception. The XT/AT bus is gone, floppy drives are essentially gone, parallel and RS-232 serial ports are as good as gone, massive evolution has taken place with graphics, and so forth, but the stupid BIOS and its specifications from about the IBM AT days is still very much with us.
EFI will offer many new capabilities, one of which is the ability to do a wide range of diagnostics without booting into an operating system and running a utility, much in the same way that you can currently perform a low-level format of a SCSI hard drive by running the embedded formatting program that's stored in the SCSI host bus adapter's PROM.
Newz:
http://news.zdnet.co.uk/0,39020330,39210818,00.htm
Unified Extensible Firmware Interface website:
http://www.uefi.org/index.asp