HT201564: Software update, upgrade--what's the difference?
Learn about Software update, upgrade--what's the difference?
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Helpful answers
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Feb 21, 2015 12:12 PM in response to chasritaby Niel,Only if you downloaded the full installer for it before Yosemite came out. Otherwise, your upgrade options are 10.7.5, 10.8.5, and 10.10.2.
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Feb 21, 2015 12:15 PM in response to chasritaby KiltedTim,If you already purchase it, yes. If not, then no. You can upgrade to Yosemite, though.
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Feb 21, 2015 12:16 PM in response to chasritaby Allan Eckert,Why do you think you need to upgrade to 10.9?
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Feb 21, 2015 4:48 PM in response to chasritaby Eric Root,One option is to create a new partition (~30- 50 GB), install the new OS Yosemite, and ‘test drive’ it. If you like/don’t like it it, you can then remove the partition. Do a backup before you do anything. By doing this, if you don’t like it you won’t have to go though the revert process.
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