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Helpful answers
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Mar 9, 2016 11:36 AM in response to sulakmby Eric Root,Do a backup, preferably 2 separate ones on 2 separate drives.
Revert to former OS from Mavericks
If you do revert, I'd use Setup Assistant to restore your data. This process takes a while, so do it when you won't need the computer for several hours, based on my experience.
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Mar 9, 2016 10:18 PM in response to Eric Rootby sulakm,Hello Eric and thanks for your help.
Unfortunatelly my Mac Mini shipped with 10.9. and Internet Recovery only offers me 10.9. What I am asking for is how can firmware be converted to 2012.
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Mar 9, 2016 11:51 PM in response to sulakmby Alberto Ravasio,If your Mac mini was shipped with Mavericks it won't run any OS X inferior to the one that came preinstalled.
You may run Mountain Lion on a virtual machine though.
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