Re: PRODOS in ROM chip; boot from ROM

[dempson@actrix.gen.nz (David Empson)]

Derek Peschel <dpeschel@u.washington.edu> wrote:

> In article <19970505201512231099@dempson.actrix.gen.nz>,
> David Empson <dempson@actrix.gen.nz> wrote:
> >stephen e buggie <buggie@musca.unm.edu> wrote:
> 
> >> A technician told me that the Mac launches its desktop from a system
> >> stored in ROMs; it does not need disk access or hard drive access.
> 
> >Well, not really - it cannot do anything useful until it reads the
> >system file, etc. from the boot disk.
> 
> There is one model of the Macintosh (the Classic, I think) which really can
> boot from ROM.  Holding down Command-Option-O-X (that's the letter O, not the
> number zero) just after turning the computer on does the trick.  No boot disk
> is required.

Ah, but the Classic cheats - it has a ROM disk, which contains an image
of a small HFS volume, including the System Folder, System and Finder.

There is therefore still a disk involved.

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand