The oldest MacBook had Mac OS X 10.10 installed. The oldest MacBook Pro which can upgrade to Mojave shipped with 10.7, Lion. The oldest MacBook Air, Mac mini, and iMac which can upgrade to Mojave shipped with 10.8, Mountain Lion. Your Apple menu -> About This Mac -> System Report or System Profiler gives you the model identifier.Īll of the Macs that are older than 10.11, need to be updated to 10.11 first before installing Mojave.
Regardless of which direction you go, backup your data first. This means if you need to downgrade the machine, you will need to erase the partition with the older HFS extended GUID to use the older systems. Download based on manual time may fail, especially on older systems where the system time is not set right.īe forewarned, Macs with solid state drives will be updated in formatting to APFS with 10.13 or later (this is discussed later in the tip, but bears repeating). Go to Apple menu -> System Preferences -> Date and Time and select the closest time server to set your time, and do so. First isolate why your Mac is slowing down or crashing before installing anything new.Īpple includes many full upgrade installer links on How to get old versions of macOS - Apple Support
Slowing down of your Mac should not lead you to assume an update will fix everything. No update should be ventured into with operating systems or software without first ensuring your data is backed up in two separate places. Is an article I wrote that everyone updating their Mac should read.
September 13, 2021, an updated Safari 14.1.2 was pushed via Apple menu -> About This Mac -> Software Update. See special note about resetting the SMC during updates and upgrades, later in the tip. Here is the series of tips for related Macs Server forums cover Mac OS X server on the community. This is a series of tips that cover Mac OS X client edition.
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