OS X Yosemite (/ j oʊ ˈ s ɛ m ɪ t i / yoh-SEM-it-ee; version 10.10) is the eleventh major release of macOS, Apple Inc.' S desktop and server operating system for Macintosh computers. OS X Yosemite was announced and released to developers on June 2, 2014, at WWDC 2014 and released to public beta testers on July 24, 2014.

I created a Yosemite boot USB, from the App Store version 10.10.1. When I hold option during Boot, the USB drive doesn't show up on the menu. I have an aluminium MBP, bought in 2009. It is the full body aluminium with the Superdrive. Per Apple, this is my machine: MacBook Pro (13-inch, Mid 2009). The Mac Pro is a series of workstations and servers for professionals designed, manufactured, and sold by Apple Inc. The Mac Pro, by some performance benchmarks, is the most powerful computer that Apple offers.

Introducing the new MacBook Air, 13‑inch MacBook Pro, and Mac mini, all with the Apple M1 chip.

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Mac Pro 2009 Yosemite

Announcing the new Apple TV+, Apple News+, Apple Arcade, and Apple Card.