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10.6: Create a bootable 10.6 partition on an APM drive System 10.6
Snow Leopard only hintAs someone responsible for supporting Macs, I carry around an external drive (LaCie Rugged with USB2, FW400, and FW800 connectors) that holds all my tools, as well as different versions of OS X, reaching from 10.3 (PowerPC) to 10.5. Recently, I had the time to finally add a 10.6 partition to the drive, and noticed that Snow Leopard won't install on a non-GUID drive -- the Installer simply won't let you continue.

I can't afford to loose the ability to boot PowerPC systems like 10.3 or 10.4 or even the universal 10.5, so repartitioning as GUID was not an option here. Knowing that Intel versions of OS X will boot just fine (though officially unsupported) on APM-formatted drives, I solved this in a somewhat inelegant but effective way: I installed 10.6 on another drive with the GUID partition scheme, and simply cloned it back to an empty partition on my APM drive.

So for now, at least, I can still use one drive to boot all these systems: 10.3 PowerPC, 10.4 PowerPC, 10.4 Intel, 10.5 (Universal), 10.6 (Intel only, of course). Note that this might change in the future (10.7?), but for now, it works fine.
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10.6: Create a bootable 10.6 partition on an APM drive | 7 comments | Create New Account
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10.6: Create a bootable 10.6 partition on an APM drive
Authored by: baltwo on Nov 05, '09 12:47:04PM

Old news. You can't install Leopard or Snow Leopard onto an APM formatted disk when running from an ICBM (Intel-chip-based Mac). Installing it first onto a GUID formatted HD and then cloning it was always the solution.



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10.6: Create a bootable 10.6 partition on an APM drive
Authored by: Sesquipedalian on Nov 05, '09 07:05:12PM

Maybe you consider it old news, but it is new to me, and the only question that matters anyway is whether this information has been posted on this website before.



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10.6: Create a bootable 10.6 partition on an APM drive
Authored by: baltwo on Nov 06, '09 01:31:47PM

I didn't check. Did you? There's 38 hints referencing bootable volume and I haven't read them, but suspect that a few touch on what's in the hint. Additionally, it's been posted at Apple Discussions and the Bombich Forums (home of CCC).



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10.6: Create a bootable 10.6 partition on an APM drive
Authored by: gvitale on Nov 05, '09 01:03:01PM

Finder -> Go Menu -> Go To Folder, enter this location: /Volumes/Mac OS X Install DVD/System/Installation/Packages; open OSInstall.mpkg.
It will let you install on whatever partition you can mount.



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10.6: Create a bootable 10.6 partition on an APM drive
Authored by: boxcarl on Nov 05, '09 06:43:24PM

"loose" → "lose."



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10.6: Create a bootable 10.6 partition on an APM drive
Authored by: ChadLawson on Nov 06, '09 12:59:22PM

As previously mentioned, this is not 10.6 specific. Only GUID is supported for Intel machines and the Install discs will not allow an install to an APM drive in an Intel machine.

One early official source:
http://docs.info.apple.com/article.html?path=Mac/10.4/en/mh2315.html

As part of the "Mac OS X Support Essentials" course (book available through Peachpit Press) it is thoroughly covered (and part of the test) that from an official support standpoint, PPC will only boot APM and Intel will only boot Intel.

The reality, however, is that an Intel machine will boot either. PPCs will only boot APM, though.

So to have a "diagnostic drive" that contains boot and/or installers for either platform, you can/should use APM.

In order to get around the technical issue mentioned, my solution is to:

1) Partition an Intel machine as GUID
2) Install Mac OS X
3) Boot off an external drive that contains Disk Utility
4) Make a file-level (New Disk Image from Folder) clone of the drive
5) Partition your "diagnostic drive" as APM and include a space for your new OS
6) Restore the disk image to your drive

Using this method, I have an APM drive (triple-interface) with the following:

* Boot 10.4 PPC
* Boot 10.6 Intel
* Install 10.4 PPC
* Install 10.4 Intel
* Install 10.4 Server
* Install 10.5 Client (Universal)
* Install 10.5 Server (Universal)
* Install 10.6 Client (Intel)
* Install 10.6 Server (Intel)
* Lastly, a large Tools/Cargo partition for common apps, etc.

I've been using this method since the oldest installer on my drive was 10.2 and the newest OS was 10.4 (Intel), so I'm very confident it will work for you.

Good luck!



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10.6: Create a bootable 10.6 partition on an APM drive
Authored by: BY1 on Sep 30, '10 12:20:50AM

Thanks Chad and Poenn

(I just stumbled across this item... )
I too have an ext disk with multiple volumes and multiple OS versions. But the suggestion and discussion points up to some ways I can refine that for greater flexibility the next time I go at updating them.

Currently an old LaCie 120GB partitioned into 4 vols with 10.3.9, 10.4.6, 10.4.8 and 10.5.6 (not exactly sure why I have two tigers in the tank... ;) )


Thank you.

---
~ 'the Universe is intelligent & friendly'



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