06.012 What does it mean to "Boot" a disk?
Description
This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
06.012 What does it mean to "Boot" a disk?
BOOT comes from the idea of 'pulling yourself up by your bootstraps'. The
Apple II disk controller ROM has just enough smarts to load-in DOS's Bootstrap
Loader from Track 0, Sector 0 (it comes in at address $800 ...).
The Loader loads in a still smarter, bigger routine from several sectors
of Track 0. This routine is the one which loads in the rest of DOS, moves it to
the proper place in memory, and ends up going to DOS's Cold Start routine.
Finally, the hello program is loaded and executed.
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