Got this 12” PowerBook, that only boots to this screen and not into open firmware. Is it firmware locked, and if so how can I wipe it and reinstall OS X? :
OS X 10.12: Everything We Know | MacRumors
ALFA NETWORK: Support Mac OS X 10.12 ( Sierra ) WiFi USB Model List
MacOS Sierra 10.12.3 Update Released | OSXDaily
macOS Monterey introduces powerful features to get more done - Apple
Review: Parallels Desktop 12 for Mac shows why a virtual machine matters – GeekWire
macOS vs. Windows: Which OS Really Is the Best?
macOS Monterey - Wikipedia
macOS Monterey is now available - Apple
macOS Big Sur: Your MacBook and iMac are about to get one of their biggest updates EVER | Express.co.uk
Today Marks 20 Years Since Mac OS X First Launched - MacRumors