Upgrading an xserve from Tiger to Leopard

[Andrew Oliver]

On May 28, 2008, at 3:44 PM, John Summerfield wrote:

> I was hoping this would be possible. Is the result of this asr  
> command a bootable disk? To clone a disk on Linux, I'd want it  
> unmounted and therefore that form would not be possible.

As per 'man asr':

> HISTORY
>      Apple Software Restore got its start as a field service  
> restoration tool
>      used to reconfigure computers' software to 'factory' state.  It  
> later
>      became a more general software restore mechanism and software  
> installa-
>      tion helper application for various Apple computer products.   
> ASR has
>      been used in manufacturing processes and in shipping computers'  
> System
>      Software Installers.

Since it's used at that level, it's clear that asr-based clones are,  
indeed, bootable, especially with the help of bless.

Now, if you're cloning a live system with changing data, you're taking  
your chances - it may or may not boot depending on which files change  
during the clone. That said, to date I've yet to have a problem with it.

Andrew
:)