Mac OS X   Sierra

About the Sierra category (1)
How to Reset Forgotten macOS Sierra Password (1)
New feature - Unlock macOS Sierra using Apple watch (1)
How to Downgrade from macOS Sierra to El Capitan (1)
Instruction to download and make Bootable MacOS Sierra 10.12 USB Installer Drive (2)
How to Install MacOS Sierra 10.12 into an independent partition on your Mac (1)
Which Mac is compatible to MacOS Sierra 10.2 (1)
MacOS Sierra and NTFS support? (4)