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#Purchase apple os x 10.10 yosemite how to#

Always keep a fully functional, independent backup of your data.

Installing any operating system carries the risk of data loss.

If you are having trouble with OS X and you need support, please contact Apple before attempting this process.

This process is experimental and provided as a courtesy – OWC does not provide technical support for OS X or its apps.

Please check your Mac documentation to verify compatibility.

This process works only if the version of OS X you are reverting to is supported by your Mac hardware.

The results were mixed, but mostly positive.

This article provides a detailed look at a recent attempt to revert from 10.10.3 to 10.6.8, without the benefit of a Snow Leopard Time Machine backup. Reverting to an earlier version like 10.7 or 10.6 can be more complicated, especially without a Time Machine backup. As an example, if you are reverting from 10.10 to 10.9 (the next most popular version of OS X) and you have a Time Machine backup, the process is relatively simple. How easy or difficult the reversion is depends heavily on whether you have a full Time Machine backup of the original system installation.

The reasons for doing this will vary but the two most common are application incompatibilities and/or a dislike for the changes made to the user interface.

#Purchase apple os x 10.10 yosemite how to#

One of the more interesting requests we get from OWC customers is how to revert from OS X 10.10 Yosemite to an earlier version of the system.