This will take you to the boot menu, where you can select whch disk or device you want to start up from. Once you see the startup options screen with your startup disks and a gear icon labeled “Options”, release the power button. To get to the boot menu on a Mac, you need to start up your Mac and press and hold the power button as it starts up. Finally, select “Startup Security Utility” from the list of options in order to begin booting from the USB drive. When you see your Mac has powered down, press and hold the power button untl you see a prompt that says “Loading startup options.” When the Options icon appears, select it and then choose the volume that corresponds to your USB drive. Next, select ? > Shut Down from the menu bar. To boot from a USB drive on your Mac M1, start by connecting the USB drive to your computer and ensuring it is powered on. Select it and your MacBook Air will begin booting from the drive. After a few moments, you shuld see an option to boot from your USB drive. Once that’s done, plug the USB drive into one of the MacBook Air’s USB ports, then click the Apple logo in the upper left corner of the screen and select “Restart.” On the next screen, click “Restart” to confirm you want to reboot your computer. First, you’ll need to make sure the USB drive is partitioned properly and contains the same version of OS X as your copy of OS X. Booting From USB on MacBook Airīooting from a USB drive on a MacBook Air is a straightforward process. You may need to update your firmware or reformat your USB drive and try again.

If these two requirements are met and you are still unable to boot from USB, it could be due to a corrupted file on the USB drive or an outdated firmware in your Mac. Additionally, USB 2.0 must be used for making macOS bootable USB.

It is possible that the version of macOS or Mac OS X that you have on the USB drive is not compatible with the hardware, which cold be why you are unable to boot your Mac from USB.

Boot usb macbook