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nguyenhabac Author

Level 1

4 points

install macos Siera

My Macbook Air Mid 2012, how I can install macOS Siera (InstallOS.dmg) from Finder download? Please show me the way step by step. Thank you!

MacBook Air 13″, OS X 10.11

Posted on Feb 23, 2022 6:24 PM

Top-ranking reply

PRP_53

Level 10

92,107 points

Posted on Feb 24, 2022 2:05 AM

This is based upon the user ( you ) having the Full Download Version of Sierra from this apple Website How to get old versions of macOS

Once the DMG file is download, double click the DMG which open another windows showing a PKG files. Double click on the PKG file. This will install a New Application in the Applications folder called " Install Sierra "

Double click " Install Sierra " which will start the installation process of Sierra. Follow the prompts and there maybe several automatic restarts until the final restart where Setup Assist will be presented.

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install macos Siera

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