You can let go of the keys when you see a screen similar to the screenshot below. Keep holding as your Mac boots, which may take a few moments depending on its specific configuration.

To use Recovery Mode, reboot or start your Mac and hold the Command and R keys simultaneously on your keyboard as you see the iconic white Apple logo against a black screen. Additional resourcesДЄpple provides VoiceOver user information at with the release of macOS Lion in 2011, Macs have offered a Recovery Mode that users can access to diagnose hardware issues, restore Time Machine backups, manage hard drives, and even reinstall macOS itself. Typing 'nav' will filter to the headings that contain those characters. For example, with the Headers rotor open, pressing '2' will filter to second level headings. Within the rotor, you can begin typing to filter the available elements. Once a page element type is selected, use the Up Arrow and Down Arrow to select a particular element and Enter to activate it. Open the rotor by pressing VO + U, then use the Left Arrow and Right Arrow keys to choose between element types (availability varies depending on the content of the web page, and whether the element type is enabled for viewing in the rotor), such as Links, Headings, Tables, Frames, Images, Auto Web Spots (automatically generated list of structural and significant items on the page), Web Spots (user-identified page areas), Form Controls, Landmarks, Visited Links, and Non-Visited Links. You can choose which element types are viewable in the rotor by opening the VoiceOver Utility with VO + F8, then going to Web > Web Rotor. The VoiceOver 'rotor' feature helps users to do some frequently performed navigation actions quickly and easily. Read column from VO cursor location to bottom of column Read row from VO cursor location to end of row You can navigate tables in text areas by row and column, and sort by column. Interact with (go into/out of) objects (like iframes, menus, application regions, etc.) Go to next/previous focusable item (link, button, input, etc.) You can press the Shift key with these commands to move to the previous occurrence. The following shortcuts will help you navigate common page elements. Select speech setting option (speaking rate, voice, pitch, etc.) Jump to bottom of page (using laptop keyboards) Jump to bottom of page (using desktop keyboards) Jump to top of page (using laptop keyboards) Jump to top of page (using desktop keyboards) Read word (press W multiple times to spell words alphabetically and phonetically) The VO keys can be locked so that they do not need to be pressed to perform VoiceOver commands by pressing VO +. The combination is referred to as VO in the tables. VoiceOver uses the Control and Option keys before each command. If you try to use it with any other browser, it may work for some things, but not as consistently as with Safari.Д¬ommand + F5 starts the VoiceOver program.

Command option r on mac keyboard