Need to Install Snow Lion on iMac that has Lion Installed
I just bought a 27" May 2011 iMac that came with Lion. I bought a copy of Snow Leopard that I need to install to run my programs. I've created a separate partition to load SL onto. Now what? Will it install even though Lion doesn't have Rosetta?
Lloyd Lathrop wrote:
I don't understand why I can't just install SL onto the empty partition I created on the hard drive like I did with my G5 (I have Tiger on one partition and Leopard on the other).
Because you normally can't install a operating system OLDER than the one that came with the machine.
You got Tiger and Leopard, because the machine came with Tiger and then the new OS went onto another partition. No problem.
Becuase 10.7 came out mid-product cycle, there are machines of the same hardware that originally ran 10.6, then 10.7 was installed on them, so because the hardware is the same, 10.6 or 10.7 can be installed on them, provided you have a method to get by the firmware.
Your firmware will not let you boot from the 10.6.3 to install or any pre-10.7 disk for that matter.
The 10.6.3 disk only has hardware drivers for pre-10.6.3 issued machines. 10.6.4 and later comes on machine specific disks from Apple.
So you have to follow the link for the "the procedure" which you basicially combine the 10.6.3 and the 10.6.8 combo update together then Firewire target disk mode it to a empty partition. Which means you need another Mac.
Once it's on the drive it will boot, the firmware won't stop that, it only prevents pre-10.7 disks from booting.
That's my understanding of it, in the thread there are others posts how they got it working on iMac's too.
https://discussions.apple.com/thread/3264421?start=0&tstart=0
The easiest way to install 10.6 would be to call Apple and ask for the replacement 10.6.4+ machine specific disks, however they could consult their records and see it's a refurb and it orginally came with 10.7 and deny you, but you can certainly TRY as that's the easier method than making the combined disks.
Another method would be to search high and low for another user with a Mid 2011 iMac and the machine specific 10.6.4+ disks. Even if you did this, you STILL need to use Firewire target disk mode because the firmware will block you from booting from any pre-10.7 disk.
But once you got 10.6.8 on the machine it will boot and you can clone it and option key boot from the clone and reverse clone.
You have everything, just you perhaps don't have the ability to go about it, you might find the assistance of local Mac geek that can do it for you.
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