Access Wi-Fi settings from the Wi-Fi menu. You will need to connect to Wi-Fi because your Mac will need to connect to the internet during this process.Your Mac will shut down and restart in Recovery.Choose the external drive with your installer as the startup disk and click Restart.Open System Preferences and click Startup Disk.Connect the bootable installer to your Mac.Then, a bootable installer will be created. “MyVolume” should be replaced with the number on the USB drive that you have plugged into your system. Open Terminal and input the command “ sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume”.Prepare a memory stick with large enough space and then reformat it in Disk Utility.If your device’s OS version is higher than macOS Sierra, you need to install macOS Sierra through a USB drive. If your device’s OS version is lower than macOS Sierra, you can open the Install macOS Sierra app from your Applications folder to begin installing the operating system. Removed functionalities like the support for garbage collection and the native support for the VPN protocol PPTP.Improved Photos, Safari, Apple Pay, Messages, iTunes, Notes, Finder, Mail, and security features.Night Shift was added to reduce blue light at night to aid sleep.A preview of a new file system called Apple File System (APFS) was released to overcome the limitations of HFS Plus.Universal Clipboard was added to help users to share the clipboard for cutting, copying, and pasting between macOS Sierra and iOS 10 devices, including text and rich content, such as pictures or videos.Auto Unlock was added to help users unlock their user accounts by holding a paired Apple Watch close to the device.It also gives the user detailed information about space usage per application or file and provides tools and suggestions for freeing up space. iCloud Drive was added to help users sync documents and desktop directories to other devices.Siri was added to help users send messages, search the web, find files and adjust settings.Compared to the previous versions, this OS brought the following new changes: Released in 2016, macOS Sierra (version 10.12) is the thirteenth major release of macOS. Do you want to install macOS Sierra on your device? This post from MiniTool Partition Wizard offers the full macOS Sierra download and install guide. MacOS Sierra is the thirteenth major release of macOS published in 2016.

Osx 10.12 install