[WinMac] Re: Mac won't boot from CD ROM

Peter Mannheim(pm-fosco[at]dircon.co.uk)
Tue, 29 Jun 1999 21:38:06 +0000

>Subject: Mac won't boot from CD ROM
>From: "jstahl" <jstahl@stifirestop.com>
>Date: Wed, 23 Jun 1999 07:46:59 -0400
>Mime-version: 1.0
>
>I've posted this question before and I didn't receive any responses... So
>I'll try it again. We have a Mac 9600-200 on our network that will not
>consistently force boot from the CD. The unit was serviced and the CD ROM
>was replaced. The problem is still there. It will play some CD's just
>fine. Others simply do not work. Unfortunately this includes system disks.
> An example is Mac Addict CD's. You can run the CD when you have booted
>from the hard drive, but it will not boot from the CD when system updates
>are included on the disk. The Apple system software disk will not boot the
>computer at all. Any thoughts or suggestions would be appreciated.
If the Cd-ROM drive is an Apple brand CD-ROM, start it up holding down the
"c" key.

In certain rare cases where the System folder on the hard disk is too
screwed up to "release" the capability to switch the Startup Disk you *may*
have to unplug the SCSI connector from the boot disk and then hot-plug the
HD back in, then restart, having previously open the Startup disk control
Panel , clicked on the CD-ROM icon, then closed it again. The reason you
have to do this even though there is, at the time, only ONE disk to choose
from, is because the Satartup disk setting is stored in the parameter RAM
(PRAM) so it is no use "zapping" it because that just sets it back to the
default , viz. booting from the HD again. Once booted from the CD and
having rebooted so your hard disk appears, you can wipe the disk, put on a
clean system, etc...

Peter Mannheim
pm-fosco@dircon.co.uk
<just another data sheriff>

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