During this period, don't unplug the power cable or put your MacBook lid down.Release the keys when seeing the Apple logo and progress loading bar.If you can't measure the time, you can simultaneously press down the keys when Mac startup. The time between starting the computer and pressing the two keys shouldn't be over 3 seconds.Start or restart your Mac and immediately hold down the Command-R keys.You can follow the steps below to check if you can boot your Mac into Recovery Mode with Command + R this time. How long to press down the two keys and when to release them are crucial for entering macOS Recovery. Check if you use Command + R keys properly And for macOS Sierra launched in 2016 or earlier, it doesn't offer all options in Recovery Mode.
Note: If your Mac runs Mac OS X 10.6 Snow Leopard or older, there's no recovery partition available. And consequently, fix the Mac Recovery Mode not working issue. You can troubleshoot the malfunctioning Command R with the following solutions. Any of these can bring about the Command R not working even on macOS Big Sur and Monterey. For example, your inappropriate way of using Command R keys, faulty keyboard, Mac corruption, OS bug, etc. The reasons for Command R on Mac not working are various. Reset Mac or reinstall macOS without Command R Try different combinations to replace Command + R keys.Check if your way to use Command + R is right.Solutions to make Command R workable again What to do when Command R not working on Mac/MacBook: In addition, it enables you to factory reset your Mac or reinstall macOS even if Command-R doesn't work. Then, you can enter macOS Recovery Mode again. Here, this post will help you fix the Command R not working issue. It prevents your Mac from entering Recovery Mode. Oops! The Command R is not working on your MacBook Pro, MacBook Air 2020, iMac, or so. Unexpectedly, your Mac fails to boot in Mac Recovery Mode but starts up normally or shows a blank or black screen. You press the Command-R shortcut keys during Mac startup, trying to enter the built-in Recovery Mode to reinstall macOS or reset your Mac.