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Create bootable clones via the command line
Authored by: osxpounder on Sep 22, '04 12:37:13PM

So, if I backup my HD using dave's shorter plan, then change my hardware, I risk not being able to restore from my backup?

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osxpounder



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Create bootable clones via the command line
Authored by: daveschroeder on Sep 23, '04 09:47:08AM

No, I have used that exact method hundreds of times on everything from laptops to Xserves to Power Mac G3, G4, and G5 and everything in between, and have NEVER had any issue or anomaly. That's exactly how it's supposed to work, and is perfectly in accordance with the documentation (see my previous post).

The ONLY time ANY cleanup is recommended is if you are making a distribution IMAGE. Swap is deleted to save space, and the volume info stuff was deleted because it could cause kernel panics under certain conditions on different hardware on earlier versions of Mac OS X, but that has all been resolved, so even that doesn't matter any more.

The only command that is needed for any type of hardware (ASSUMING the hardware supports that particular version of Mac OS X[1]) is the single asr command I've described above. Same goes for rsyncx.

[1] Example: the iMac G5 comes with a NEWER version of Mac OS X 10.3.5 (7P35) than the "normal" 10.3.5 (7M34). You wouldn't be able to take a 7M34 clone and boot an iMac G5 with it. When the next point update, e.g., 10.3.6 (if there is a 10.3.6) comes out, it will consolidate all of the updates, making 10.3.6 universal again...until the next new hardware comes out. This is ONLY an issue for new hardware that has a special build of OS X for new hardware support. Other than this specific exception, an install of Mac OS X is always universal, and can be used on everything from an iBook G3 to a Power Mac G5. And even in the case of the "special" builds, if a universal image is desired, it's standard practice to simply use the newest build - even "updating" over an existing installation with the new build is acceptable.



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