+ + What to Do if Your Mac Can’t Run macOS Sierra Posted on December 15th, 2016 by Note: Although this article was written for macOS Sierra (10.12), much of it still applies to macOS High Sierra (10.13) which was released in September 2017. High Sierra's system requirements are the same, except that High Sierra now requires 14.3 GB of available disk space, and a minimum of OS X Mountain Lion (10.8) to do a direct-upgrade installation. Apple recently released a new version of its Mac operating system, macOS Sierra (version 10.12). With the release of Sierra, Apple decided to drop support for some Mac models that were supported by several previous releases of the Mac operating system. In other words, just because your Mac was compatible with El Capitan (OS X 10.11), Yosemite (10.10), Mavericks (10.9), or Mountain Lion (10.8) may not necessarily mean that you'll be able to upgrade to Sierra. Some Mac models, such as 2007 and 2008 iMacs, are being left behind with El Capitan as their maximum OS version. Certain older Mac models are still limited to Lion (10.7), which has not been getting security patches since Yosemite was released two years ago. ![]() ![]() Press Options - Command - R to upgrade to the latest version of macOS that's compatible with your Mac. Press Shift - Option - Command. If you're running macOS High Sierra on a Mac with an SSD, your choices will be some form of APFS. If you have any more questions about reinstalling macOS on your Mac, let us know in the comments. Some early Intel Macs released in 2006 are stuck with Snow Leopard (10.6), which hasn't received security updates since the release of Mavericks three years ago. Old Operating System = A Bad Thing Being stuck on an old version of macOS is not something you can safely ignore. For one thing, running an old operating system means you won't receive critical security updates from Apple. Moreover, many third parties have stopped releasing software updates compatible with older operating systems. For example, the latest versions of Chrome and Firefox won't run on anything older than Mavericks. For now, Flash and Java also officially support Mavericks and later. Browsers and plugins are commonly exploited as a means of infecting computers, so it's critical that these programs—along with the operating systems that run them—stay up to date. The only security-related update that Apple is continuing to release for Snow Leopard through Mavericks is the '[un]Safe Downloads List,' which blocks a handful of malicious downloads (although signatures are often added too late to be of much use) and prevents Flash and Java content from running in your browser—if your plug-ins are too outdated and likely to be exploited. It's important to note that XProtect updates, while better than nothing, are by themselves insufficient to adequately protect your Mac. Keeping up with the latest macOS updates and using third-party antivirus and security software () are important factors in keeping your Mac protected. Apple does not make any public statements concerning how long it will continue to release XProtect updates, let alone security patches, for any particular Apple software or operating system. While Microsoft publicly announces its support timetables for Windows and other software, and the Ubuntu Linux company Canonical does likewise, Apple has never given any official notice regarding how long each version of macOS or iOS will continue to receive security updates. Adobe photoshop lightroom cc 2018. Apple has not previously responded to press inquiries about this subject. What About My Mac? The good news is that most new Macs sold within the past several years can be upgraded to Sierra. Following is the list of Macs that can run Sierra, the current and best-supported version of macOS. If your Mac is older than the ones listed directly below, read on for suggestions about what you can do to upgrade to an operating system that's still getting security patches. Sierra Capable Macs macOS Sierra requires one of the following Macs with at least 2 GB of RAM, 8.8 GB of available storage space, and at least OS X Lion: • iMac (Late 2009 or newer) • MacBook (Late 2009 or newer) • MacBook Air (Late 2010 or newer) • MacBook Pro (Mid 2010 or newer) • Mac mini (Mid 2010 or newer) • Mac Pro (Mid 2010 or newer) Those who are unsure which Mac model they own may find and to be useful sites.
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