Before embarking on a major OS upgrade, it would be wise, advisable and very prudent if you backup your current system to an external connected and Mac formatted Flash drive OR externally connected USB, Thunderbolt or FireWire 800, Mac formatted hard drive. Then, use either OS X Time Machine app to backup your entire system to the external drive OR purchase, install and use a data cloning app, like CarbonCopyCloner or SuperDuper, to make an exact and bootable copy (clone) of your entire Mac's internal hard drive. This step is really needed in case something goes wrong with the install of the new OS or you simply do not like the new OS, you have a very easy way/procedure to return your Mac to its former working state.

Then, determine if your Mac meets ALL minimum system install requirements. OS X Lion system requirements Purchased emailed download code here. To use Lion, make sure your computer has the following: An Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor Mac OS X v10.6.6 or later to install via the Mac App Store (v10.6.8 recommended) 7 GB of available disk space 2 GB of RAM To install OS X 10.8 Mountain Lion, 10.9 Mavericks (currently unavailable) or OS X 10.10 Yosemite.you need one of these Macs: OS X 10.8 Mountain Lion purchased emailed download code here. I have a question related to the first one. I read in a previous thread that someone installed Yosemite and it copied her IPhoto pics but not their organization (in their case, by date), leaving a huge mess. If one had a good backup, which I think I do (Time Machine on an external drive), could one just re-install the backed-up I Photo library, but not everything else?

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Also, I've looked but haven't ever found any kind of handbook or guide for using Time Machine. How does one learn about it? I just poke randomly at buttons and figure out the obvious stuff, every time I need something. You are incorrect in your information.

If you are searching for the best wireless router for your Mac, you have come to the right page. In this Techspirited article, we will take a look at some of the best Mac-compatible routers available in the market presently. Ergo, with your brand new MacBook Pro or iMac in place, this is the right time to upgrade to a new router and create a ubiquitous wireless network, which lets you seamlessly share your data and connect with the Internet. As a Best Buy employee I've tried a couple of router but the Linksys EA9500 is hands down theeee best router I've ever had.the range on the router is more than enough for any home and the speed is great even if you have a lot of devices especially if your a gamer or own a 4K TV.all and all this is one of the best Tri-Band Routers on the market' 'A 3x3 MacBook Pro was able to peek out gigabit wired at 110Mb/sec which was an eye-openner. Shop for routers for mac at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up. Best router for mac pro.

It is the NEW Photos app that destroys some of the iPhoto library data when converting the library to be compatible with the new Photos app. If you previously downloaded the last iPhoto update (which is no longer available from the Mac App Store), then iPhoto continues to work with Yosemite and you can choose to continue to use iPhoto instead of the new Photos app. If you don't have the last update of iPhoto, any other version of iPhoto will no longer work with Yosemite. My advice would be to keep the current OS X version and iPhoto version you are using. Make a duplicate version of your current iPhoto library as you will have another duplicate folder to use with the new Photos app in Yosemite and you won,t destroy the library you are currently using with iPhoto. Your only other option would be to install either Yosemite to another location like another external hard drive OR clone (copy) your entire, current system and data to another external hard drive using my previously mention techniques using my stated options for data cloning software.