Before you can click on the Erase button located in the Erase tab, you must select which file system you would like to use and give it a name. Select your storage device from the list on the left and click on the Erase tab.At the bottom of the main window are storage device details, including disk description, connection type, USB serial number, total capacity, write status, S.M.A.R.T. The application will appear on the screen, and you will see the main window, with a list of available storage devices on the left and various disk management options on the right. Go to Applications and Utilities and launch Disk Utility.Connect the flash drive that you want to format.Your Mac computer comes with a handy utility appropriately called Disk Utility, which can be used to format any storage device. In this article, we are taking a closer look at the Disk Utility, which comes with all recent versions of the Mac OS X operating system and how you can use it to format USB drive on Mac. Some flash drives have to be formatted first before you can store files on them. In fact, you have a couple of ways to do this: either using Disk Utility to format the drive before installing macOS or cloning your drive using a third-party tool.Not every flash drive out there can be used with a Mac computer right out of the box.
macOS users can also install the OS onto a USB drive and work with the same installation that’s on your internal (and faster) drive. Linux users know that booting from a USB drive is a useful way to get into the OS. In short, we don’t recommend it, and it’s likely not supported. We also don’t know whether you’ll experience issues if you look to install an older OS you don’t own. Though, if your Mac is based on Apple Silicon, you may find incompatibilities. In theory, there’s no reason why you couldn’t boot an older version of macOS, and Apple does offer ways to install older versions on a USB. Can I boot older versions of macOS from a USB drive? Our testing gave us no issues when using a USB 2.0 to USB-C connector, so you’re able to press your older USB drives into service. Am I able to use a USB connection other than USB-C?
We recommend 16GB to give yourself enough “wiggle room” when it comes to the installation process. As such, you’ll need a large enough USB drive to store Big Sur. In our experience, you will not be able to do this. Can I split an installation across multiple USB drives? Disk operations on the boot drive can be performed safely from a USB stick as well. You can now run the operating system as normal and use this USB drive to boot up your Mac. For Intel Macs, restart and hold the Option key to enter into the boot selection dialog.įor both types of machines, use your keyboard’s arrow keys to select the USB drive from the list of bootable devices, click to confirm, and your USB drive will begin to boot.
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