How to find out the date of the last clean macOS installation on your Mac


Want to know how long you have been standing 🙂 – and it works without problems! – Apple OS? No problem – a simple Terminal team will help you.

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How to find out the date macOS was last reinstalled on your Mac

1. Launch the Terminal application. You can find it through the Spotlight search (the icon with a magnifying glass in the upper right corner of the screen, next to the clock) or through LaunchpadOther.

2. Copy (⌘Cmd + C) and insert (⌘Cmd + V) to the Terminal window the following command:

ls -l /var/db/.AppleSetupDone

3. Press the key Return (Enter).

How to find out the date of the last clean macOS installation on your Mac

A date line will appear in the Terminal window: for example, June 3, 2014.

Please note: this information is not affected by the installation of minor macOS updates; only data on “clean” installations are taken into account (“from scratch”).

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That is, if you installed macOS Mojave on top of macOS High Sierra, the Terminal will not inform you about this update. Accordingly, if the Mac seller “did not take a steam bath” with a complete reinstallation of macOS, then you will quickly understand if he is telling the truth or cheating.

By the way, when buying a laptop, it will not be superfluous to check the number of battery recharge cycles. Recall this, you can do this: Apple menu ( “apple” in the upper left corner of the screen) → About this MasSystem reportPower supplyNumber of recharge cycles.

Learn how many MacBook battery recharge cycles

Learn how many MacBook battery recharge cycles

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