Re: [Fed-Talk] Creating master install disk?
Re: [Fed-Talk] Creating master install disk?
- Subject: Re: [Fed-Talk] Creating master install disk?
- From: Dave Schroeder <email@hidden>
- Date: Wed, 28 Mar 2007 15:37:44 -0500
On Mar 28, 2007, at 3:19 PM, David Emery wrote:
So are there official/authorized instructions on how to create an
updated boot/installation drive, given an OS X installation disk
(CD or DVD) and the appropriate set of updaters?
If you're talking about a Universal NetBoot/NetInstall image, yes:
http://docs.info.apple.com/article.html?artnum=304157
If you're talking about a Universal boot drive, there are various
caveats. There aren't any "official" instructions for this, per se,
and it needs to be on a disk with a partition scheme of Apple
Partition Map (APM), as opposed to GUID Partition Table (GPT).
PowerPC machines can only boot from APM disks, and the default
partition scheme is APM.
Intel machines can boot from GPT or APM disks, and the default
partition scheme is GPT.
PowerPC and Intel machines running Mac OS X 10.4.4 or later can
*read* all formats.
An APM disk can host a Universal installation, and act as a
"Universal" boot drive that can boot, and work as an OS image for,
any machine. Updating can be dicey, because there are no Mac OS X
(Universal) updaters for Client. This is typically used by people who
professionally maintain networks of Macs with various central images.
The final caveat is that newer hardware is always a slightly newer
build than the last point update (10.x.y), which isn't resolved until
10.x.y+1.
The bottom line is that, generally speaking, while Mac OS X is
universal in the sense you can take an OS X installation from an
iBook and move it to a Power Mac G5, hardware that is very new, and
the separation of the Intel/PowerPC trees for Mac OS X complicates
the idea of just having "one" master image. It's best to keep images
of the discs that shipped with each machine you have in your
possession, and if you wish to maintain a "master" Universal image
you certainly can. There have been various threads about this on the
MacEnterprise.org mailing list.
When Leopard ships, it will again be Universal and unified across all
supported PowerPC and Intel Macs. Even then, a single boot/
troubleshooting drive will need to be APM as opposed to GPT, since
the only format bootable by all Macs across PowerPC and Intel is APM.
But the same *image* will be able to be used on any machine, with the
normal exceptions that newer hardware will always have slightly newer
builds than the latest 10.5.x, which will be resolved by 10.5.x+1
(until the next newer hardware comes out ;).
- Dave
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