Update mac software from 10.5.8 to 10.6.8
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Mac OS X Leopard
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How to upgrade from OS X to or higher | Mac Forums
A version of the macOS operating system. Closed , with open source components. Apple Software Update.
IA , x , PowerPC. Hybrid XNU. Mac OS X Unsupported as of about June 23,  . But…many folks feel that although the minimum ram for Yosemite is 2gig…Yosemite runs better with 4gig or even 8gig of ram. Your MacBook has 2gig of ram…so technically Yosemite should run…but it's possible you may experience some performance issues. How about if I upgrade it to the version before that, Maverick I think Bottom line: Then, start upgrading your apps. Make sure they are as up-to-date as possible for Convert files created in obsolete apps to standard formats while you still can easily.
THEN get a new er computer. You don't have to buy something brand spankin' new, but due to a variety of factors few of which are anything to do with Apple , a typical Windows PC or Mac is probably in dire need of replacing for security reasons if nothing else every five or six years.
It's time for you to start the eventual transition to your next computer. Similar Threads upgrade Can't upgrade OS X version any higher? By adam in forum macOS - Operating System. By NightCrawler in forum Switcher Hangout.
By flmflm in forum Apple Notebooks. Finally we tried to download it but we could not find the The system does not allow to upgrade to any version higher than I'm not able to check it now, but I remember for sure that the computer was bought around , and it is one of these two 1 , 2 , which should mean that it can be upgraded even up to Maverick.
Upgrade is a major version change. In your friend's case You can buy the DVD from Apple or perhaps used.
From there, if the machine meets the requirements for From there, all upgrades come electronically from Apple. Again, if the hardware is compatible, you can jump to Mavericks to free though unlikely for most Apple also sells Lion and Mountain Lion from the web store if you need an upgrade that isn't the latest and greatest.
Your first practical step is to go to Apple. Because you have OS X