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I have a bootable backup of my old iMac which was running Tiger 10.4. The last Tiger update.
I have my new mini running 10.9.3.
Can I attach the bootable backup drive and boot the mini from that drive?
I wanted to ask before just trying it.
Whippet, Whippet Good
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Depends on how new the Mini is. If it's the most recent one, it won't boot.
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No, but trying it won't hurt anything.
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Basically, you can't into a Mac with an OS older than what the Mac shipped with.
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Don't think it would work because the hardware, and the drivers, are different. The Tiger backup wouldn't have any Mac Mini specific drivers installed, therefore it won't boot.
But then again, I could be talking out of my rear end.
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I have an i5 Mac Mini, Mid 2011 model, that I believe shipped with 10.7. I have a rescue usb drive with 10.6.8 and Disk Warrior that I use as an emergency boot disk that will boot this Mini.
I don't do anything with it other than run Disk Warrior, so I don't know if it's loading the correct drivers for all the hardware, so... YMMV.
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Why do you want to do this? There may be an alternative.
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Attach the drive, find the data and use it. No need to have that drive boot your Mini.