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1

The more advanced version, results in most memory consumption system. So, if you are only care about performance, no doubts, Mountain Lion must be your choice.


0

Short answer: yes. Get the most memory you can afford. Long answer: my wife upgraded her 2009 macbook from SL to Mav just before yosemite came out. She also had only 4Gb and was running quite comfortably on SL. Mavericks was not. Quick inspection revealed lots of swapping. Installed two new 4Gb sticks (max'ing out the machine at 8Gb). Memory pressure ...


2

To answer this question accurately, you will need to get some statistics on how much RAM you are currently using. But in general, more RAM is going to improve things, especially if you're still on 4GB. On the other hand, the 2009 iMac is really reaching EoL at this point -- according to Mactracker, the support status for that machine is currently "Vintage". ...


0

Do you have the required hardware for the system you want to run? Here is a list of requirements, I shamelessly copied these from support.apple.com OS X 10.6 Snow Leopard system requirements To install Snow Leopard for the first time, you must have a Mac with: An Intel processor An internal or external DVD drive, or DVD or CD Sharing At least 1 GB of RAM ...


0

You can complete the setup of any Mac with Yosemite installed on it without needing an Apple ID. You can't use the Mac App Store for anything but core OS updates (printers, safari, etc...) You can't use the iOS App store for music or books or podcasts, but streaming internet radio does work without an Apple ID. You can't update the iLife apps that come ...


1

That's good that you're approaching things cautiously! However, you do not need to worry about this; Apple has built in multiple levels of protection to prevent you from messing up your computer. There are two larger protections: The App store automatically makes sure that the file you downloaded is what you were supposed to download and fixes anything ...


0

If you mean from iOS 7.1.3 to iOS 8.3 beta. you do not have to update to iOS 8.2 beta first. Be warned: this will wipe all of your data.


0

I presume you mean 8.1.3 … & also 7.1.2, as there never was a 7.1.3 afaik You can go straight to it - in fact, there's no other option. It's the only route. Apple stops signing old releases shortly after a new one comes out, so an older version wouldn't work, even if you got hold of it. Safest route to any update is… Sync to iTunes Backup to iTunes ...


-1

Yosemite needs a minimum of 4gb to run smoothly IMO, however 8gb is better if you're a power user.


1

No, you cannot. Apple is no longer signing the 8.1.2 update, as can be seen in the chart at The iPhone Wiki. Edit: The screenshot got partially cut-off, but the upshot is that all devices that support 8.1.2 were listed under the same item, and all stopped signing on 10 February 2015.


3

Yes, it will work. The only thing you need to understand is that logic board is a determinative component in a MacBook and all the other parts (like flash drive, Wi-Fi module, etc.) just connected to it. But all of them are completely changeable. So if you got two MacBook Air 11" 2011 you can interchange their parts in any order you want. Just don't ...


0

If you have a spare 8GB (or bigger) USB drive (or an external hard drive, or even an unused partition on your internal hard drive), you can download the Yosemite installer from the App Store and use it to create a bootable Yosemite installer. Here are Apple's detailed instructions for doing so.


1

I'm pretty sure you can't buy installer discs from Apple anymore (Lion was the last version they sold an installer for, and that was a USB key, not a DVD. But you can make your own in several different ways: Create a USB installer with the createinstallmedia tool included in the downloadable installer. See @onik's answer, or Apple Support Article HT201372: ...


2

It seems that Apple doesn't supply OSX on a retail DVD anymore, since all modern Macs have a recovery partition, which contains the installer and is updateable. However, there are ways to create an installer USB drive, and here is Apple's own solution. Before you're able to create a bootable OS X installer, you'll need to do the following first: ...


1

Yes. You'll have a real issue with the airport/bluetooth cable as well as the position and length of the LVDS cable. Besides, you will gain very little as the newest revision of this was 2012 and the improvements are very small compared to the cost of a logic board.


1

If I understand correctly your question is about whether having matched RAM modules is important. Matched RAM modules allow the motherboard to use the modules in dual channel mode, making more bandwidth available. But as far as I know it is better to have more RAM in single channel than less RAM in dual channel. If you are going for a non-matching module, ...


1

Crucial RAM will almost certainly work with the existing. Their configurator is pretty good at getting exactly the right RAM for the machine.


1

Yes, you can upgrade the drive in your MacBook Pro 13 Mid 2012 to an SSD. Here is a detailed guide from iFixit specifically on hard drive replacement. And here are more tutorials from Other World Computing on how to handle various upgrades such as memory, hard drive, battery replacement, etc…


1

That machine will take 16's - my 3,1 does, to an unofficial maximum of 64GB [or more, according to Everymac, though I've not tested that myself]. The arrangement is not what you would initially think logical. If you install equal-size DIMMs (for example, all 1 or 2 GB DIMMs) in your Mac Pro, Apple recommends that you fill the slots in the order listed in ...


0

Okay, so ultimately there are some specific requirements that the Mac Pro has in terms of where you stick the 8GB DIMMs. I am curious as to whether or not that could have had bearing on the 16GB DIMM issue wherein the system would simply not start up, but I wanted to at least share the ultimate configuration that worked after a couple of iterations (since ...



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