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Boot into OS 9 without setting Startup Disk System
Sometimes on my home system (Beige G3 DT), I still have to reboot into classic to run various apps, utilities, etc. Instead of constantly visiting Preferences -> Startup disk to change my startup drive, I found out that if I reboot my Mac and hold down the "c" key, (with no CD rom in the drive), it will reboot into my classic environment. Then, if I need to go back into X, I just reboot and it automatically reboots into X without having to visit any control panels! My current HD is setup this way:

Partition 1 - 4 Gb (MacOS 9)
Partition 2 - 4 Gb (MacOS X)
Partition 3 - 22 Gb (Data)

I am not sure if it only works in this configuration, but it might be worth a try on other configurations.

[Editor's note: Just when I thought I'd seen all possible ways to restart an OS X box into OS 9, here's another one to prove me wrong!]
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Authored by: cubixe on Mar 21, '02 01:51:37AM

When you startup while holding the "C" key, the computer searches various drives for a startup disc or disk. In the case of a system with a cd drive and a HD partitioned, it would start with the CD drive, then move to the first partition, then subsequent partitions, booting from the first valid system it finds. So if osx was your first partition, you would boot into X if you hold the "c" key

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booting 9/X question
Authored by: rich13 on Mar 21, '02 04:40:32AM

Is there any way to quickly choose whether to boot into 9 or X if both system folders are on the same partition? It would make sense if holding down x took you into osX and holding down c or 9 took you into os9, nomatter what your setup.

(I'm just wondering - my iMac FP hasn't arrived yet, so I haven't had a chance to experiment!)

Thanks, and feel free to point out how ignorant I am if this is a stupid question...

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Test of single partitioned drive
Authored by: Bookman on Mar 21, '02 11:53:38AM

FWIW: My iMac has the factory setup of both Mac OS X and Mac OS 9 on the same partition. From a Mac OS X boot state, I selected Restart and held down the 'C' key. My system booted back into Mac OS X. Oh well. (BTW, ARE there any other methods for using the keyboard to bypass the Startup Disk CP/SPP and boot into Mac OS 9?)

One other question: Is it a fallacy that Mac OS X has to be on the first physical partion of a multiple-partitioned drive? The original poster had a setup with Mac OS 9 on the first partition.

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Test of single partitioned drive
Authored by: vaalrus on Mar 21, '02 12:12:58PM

A slight mis-understanding. The rule is that the MacOS X partition must be wholly within the first 8GB of the drive. Partition order is non-relevant.

After much long-distance and second hand troubleshooting, these rules also appear to be enforced for the original Bondi iMacs. At least the Rev. A models. What is even weirder is that the secondary Mac OS 9 partition had to be within the first 8GB as well, which caused no end of fuss. (but then, this iMac does have a Formac SCSI card, and a Newer 466Mhz upgrade...)

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Test of single partitioned drive
Authored by: Monkey Angst on Mar 21, '02 12:20:51PM

No, the actual rule is that the partition that contains OS X must be entirely contained in the first 8GB of the disk, only on the following machines:

PowerBook G3 Wallstreet
Power Macintosh G3 (All beige models, but not blue and white)
Rev A, B, C, or D iMac

All other machines can have the OS X partition wherever you like.

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Partioning scheme on
Authored by: ihafro on Mar 21, '02 01:34:03PM

Now someone tell me if I'm wrong on this..........

This problem doesn't seem to affect "unsupported" machines.I have a Umax S900 partitioned so:

14 GB >MacOS X
5 GB >MacOS 9.1 (for booting this machine into 9)
1 GB >MacOS 9.2.2 (Blue box only)

I haven't had any problems. Just thought some people who have these older machines would like to know.

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Another way...
Authored by: rainwadj on Mar 21, '02 04:19:37PM

This may already exist in the archives, but I'm going to throw it into this thread anyway.

On recent Macs (don't know how far back this goes) you can use the Option key as your Mac boots to get a list of boot disks/partitions. Hold down the Option key during or just after your Mac chimes, and don't let go until you see the list of disks/partitions. After the list is done, just click on the one you want to boot.

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C for Classic X for X
Authored by: Trezzer on Mar 21, '02 04:36:30PM

As a matter of fact you can do this the other way around. This trick does require separate partitions for OS 9 and OS X, but if you boot into OS 9 by default, holding down X while booting will boot into OS X. In other words this works both ways.. - after rebooting in OS X it will per default boot into OS 9 again.

X/C temporarily changes the startup drive

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You could use 'D' as well
Authored by: a1291762 on Mar 21, '02 04:41:44PM

Holding D tells OF to ignore the boot-device variable and makes it scan your disk for Bootable partitions. Since your MacOS 9 partition is first, it would get booted.

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