[comp.sys.mac.system] Boot off ROM

sholden@cod.nosc.mil (Steve Holden) (03/28/91)

Thanks for all those that responded, here is the summary
that I promised.

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Here is my orginal question:

	>Just a quick question for all the experts out there.  
	>Apparently, it was mentioned a couple of days, weeks, 
	>etc...ago that there was a way using a series of key 
	>board commands to get the Classic to boot from ROM.  Is 
	>there any truth to the rumor?  

The responses tend to agree that the proper way to boot a 
Classic off the ROM is:
	
	command-option-X-O.

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The following people provided the consenses --

Johnny (jlee@watnow.waterloo.edu ) responses with:

	Yes the rumour is true.

	I believe to use the internal disk startup in ROM you 
	type CMD-OPT X-O all at once at bootup. Once you're in, 
	you can setup the ROM disk to act as the startup disk 
	afterwards.

Peter (NLEWISPN@cc.curtin.edu.au) responses with 

	Hold down command-option-X-O when you turn the machine 
	on (and keep holding until it starts to boot).  You can 
	then set the bood device to be the ROM, and set appleshare 
	to auto-log you into the server.  But you cant install 
	any inits (like communications inits/TCP/etc), whether 
	this is a problem for you I dont know.  My understanding 
	is that AppleShare Server version 3 will allow the Classic's to 	
	boot from a  server's System Folder.

Maurice (riggins@blackbird.afit.af.mil) 

	Yes, you boot up with Command-Option-X-O held down and 
	up comes the System in the Mac's ROM.  HOWEVER, it is a 
	MINIMAL system... nothing more than ROM fonts, DA's, 
	INIT's, cDev's, etc.  If you really want a decent 
	operating  system, you would have to then switch launch to 
	a System off a server...  that's really what the ROM System is 
	for, I believe.

Gilles (depeyrot@imag.imag.fr) 

	Well, on my Mac Classic, when I boot and hold down the 
	keys Command-Option-X-O (very easy to do too since you 
	have to cancel the dialog that appears asking you if you 
	want to rebuild the desktop without realeasing 	those 
	keys), a rom disk appears, then all you have to do is set 
	the startup on that disk.

gort@cup.portal.com had this to say ...

	Try holding down cmd-opt-x-o on restarting or cold 
	starting.This will do the trick. This brings up a ram disk with 
	system 6.0.3, i believe the finder is 6.1.x (that's what 
	it says!). You can use the control panel to set startup to 
	ramdisk and after that, everytime you turn on your machine, 
	it boots from rom( without holding down any keys!). i also 
	read that there is an arcade game (called 'duck hunt' 
	hidden in the rom, but that was in an april issue of a 
	computer mag, so it may be a joke (then again, it may be an 
	'easter egg').

rcook@ircsun1.ccmblab.nd.edu 

	Hold down Command-Option-X-O when starting the classic 
	and you will get the secret rom disk.  If you want to boot 
	off this disk, you have to open the control panel, choose 
	startup device and select the rom disk.  Restart and the 
	computer will boot off it.  The rom disk contains 
	Appleshare, so now you could access the network with a 
	diskless computer.

If anyone has any specific questions I'd be happy to respond using
e-mail.

Good luck!

---------------------------------------------------------------
- Steve Holden				        Scientific    -
- 4th Dimension Developer/Mac Programmer	Applications  -
- (sholden@cod.nosc.mil)			International -
-						Corporation   -
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- ** Opinions expressed are my own, and not my employer's  ** -
- ** or the government's.				   ** -
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