Q: how to disinstall yosemite
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Oct 6, 2015 8:36 AMby mario49,Greetings lilabbb,
After reviewing your post, it sounds like you want to uninstall Yosemite. I would recommend that you read these articles, they may be helpful in troubleshooting your issue.
OS X Yosemite: Revert to a previous OS X version
MacBook Pro: How to remove or install memory - Apple Support
Thanks for using Apple Support Communities.
Take care -
Oct 6, 2015 1:50 PMby Eric Root,The 2 places I’ve seen recommended most to buy reliable RAM are below. I have purchased RAM several times from Other World Computing and have always been very satisfied with the product and service. They have on-line instructions on how to replace the RAM. OWC has also tested RAM above what Apple states is the maximum. I now have 6GB installed on a early 2008 iMac supposedly limited to 4 GB and noticed an improvement.
