If the direct link does not work, it is recommended to open the link specifically within the Safari browser. Steps to Download: Click the link above to open the Apple Support article. Click on the "macOS Sierra 10.12" link in the article. Safari will prompt you to download the file. The file will download to your Downloads folder. 2. System Requirements for macOS Sierra
Disclaimer: This guide is meant for installing macOS Sierra on supported Apple hardware.
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This is a very common problem and is almost always caused by downloading a combo update instead of the full installer . Download Mac Os Sierra 10.12 Dmg
There are a few ways to download Mac OS Sierra 10.12 DMG:
A bootable USB drive is the most efficient tool for performing a clean installation or troubleshooting a crashing Mac. Prerequisites A USB flash drive with at least of capacity.
Whenever possible, disconnect macOS Sierra systems from the public internet. If the direct link does not work, it
There are generally two reliable methods to obtain the full macOS Sierra installer: directly from Apple's servers (the safest method) or via specialized third-party tools.
Before downloading, verify that your hardware meets the system requirements. macOS Sierra drops support for some older Macs, so compatibility is strictly limited to the following models:
If you are looking to run macOS Sierra on a PC, you would need to convert the DMG into an ISO file for use with virtual machine software like VMware or VirtualBox. How to download and install macOS - Apple Support Safari will prompt you to download the file
Disconnect your Mac from the internet. Open Terminal before running the installer and type date 0920170016 (this sets your Mac's clock back to September 20, 2016). Press Enter, close Terminal, and run the installer again. Error: "The download could not be completed" in App Store
In addition to hardware compatibility, your Mac must have at least and 8.8 GB of available storage .
For users attempting to install Sierra on an older, unsupported Mac, a tool like "macOS Sierra Patcher" can be used. It allows you to create a modified install drive that is patched to run on officially incompatible hardware, automatically disabling System Integrity Protection (SIP) in the process.
Furthermore, it is advisable to keep a copy of the InstallOS.dmg file on an external hard drive or a secondary backup disk. The Sierra installer is known to self-delete from the /Applications folder after a successful upgrade to free up disk space, preventing you from creating a bootable USB later without re-downloading the entire 5+ GB file.
Released in September 2016, macOS Sierra (version 10.12) marked a significant shift in Apple's operating system, transitioning from "OS X" to "macOS" to better align with its broader ecosystem of iOS, watchOS, and tvOS. While it is now considered a legacy operating system, Sierra remains crucial for users with older Macs or specific software requirements. It introduced foundational features such as Siri integration on the desktop, the Universal Clipboard for seamless copying and pasting between Apple devices, and Optimized Storage to automatically manage disk space.