It's not always the OS which is slow/fast in booting.
Considering my own Core2Duo box:
- normal BIOS boot with detection of disks (nop, can't switch detection off)
- IDE chip bios boot (no detection as I hardset the dvd drive as only device)
- extra sata raid chip bios boot for esata connector, obviously with drive detect...
long story short: the multiple bios boots take slightly more time then the then following windows hibernate wakeup.
Let's say 60% of the time is needed for the hardware to come up.. and 40% for hibernated windows to get up.
Tom UK