You have to format the USB drive and insert the proper Operating System, which is OS X. In researching the process, various Mac users have found success with non-Thunderbolt 3 drives, but under oddly specific circumstances without any real rhyme or reason for them working. It is a utility data recovery tool capable of recovering any type of data from Mac with ease. With the formatted external drive connected beforehand. When you turn the Mac back on, with the bootable drive disconnected, it should automatically select the internal drive and load normally. You will have to complete the initial Mac setup process, but once that is complete and the desktop is accessible, you can shut down the Mac and disconnect the drive safely. If you want to select an external startup disk before restarting your Mac, quit Startup Security Utility, then choose Apple menu  > Startup Disk. To Boot From Your New Mac Clone Boot Drive 1. The new Mac mini, MacBook Air, and 13-inch MacBook Pro are a tempting purchase for those eager to try out Apple Silicon for themselves. This is a fairly lengthy process, so make sure your external drive is suitable before starting. The Mac App Store listing for macOS Big Sur. Only boot from the built-in SSD or network system recovery. You can also change the startup disk from within System Preferences in MacOS. Choose the external drive and hit Enter to continue booting. Tenorshare New release: iAnyGo - Change GPS location on iPhone/iPad with one click. This article shows you two ways to boot Mac from external USB stick, as well as some troubleshooting tips in case Mac won't boot from the target USB. Part 1. While this article is more about making it possible to have an M1-based Mac that has more primary storage, the same principle can be used to create a bootable drive for emergencies. My Mac automatically defaulted to booting to the external drive, and everything was very snappy and worked great. Both methods leave your Mac with a fresh macOS installation, running off the external bootable drive. Turn the Mac back on with a long press of the power button, holding until the screen shows startup options. These partnerships do not influence our editorial content. Reasons for Mac Boot from USB. 3. You need to prepare your USB drive beforehand for this specific purpose. If you have bought an M1-based Mac or MacBook but need to upgrade your storage without buying a brand new device, you can set up your Mac to run from an external drive. So, this is how to boot Mac from USB drive. When the Mac restarts, it will automatically boot from the external disk. To convince your Mac to boot from an external drive, you have to first restart into macOS Recovery and that requires you to hold down Command-R … Some users… There are two ways to actually install macOS Big Sur to the external drive. 2. I will always keep a Mojave boot drive on an external SSD during the lifetime of my ownership of this Mac mini 2018. 2. in accordance with our, Join the discussion and share your voice here, Fix An Unexpected Error Occurred While Signing in Catalina, Library is Not Working in Photos in macOS Catalina, How to Reset Mac to Factory Without Losing Data, Handoff Not Working Between iOS 13.2/13.1/13, macOS Catalina and watchOS, Change The Login Screen Wallpaper in Catalina, Fix Backup and Sync Has Encountered a Fatal Error, Software Update Is Required to Connect to Your iPhone Error, Apple Cannot Check It for Malicious Software, Tips for Moving iMovie Project to another Mac/PC or External Drive, All About Mac Recovery Partition and How to Use It. We need to stress that the process does require a Thunderbolt 3 drive to work, as you won't have much luck with one using USB-C alone. First, you have to have an Intel-Based Mac. Select ”Allow booting from external media.” Your Mac doesn't support booting from network volumes, whether or not you allow booting from external media. Both of these methods set the external drive as the default. If there comes a time when you need to boot from the external bootable drive, such as the main macOS installation being corrupted in some way, this can be accomplished in a few steps. If the external can be both bus-powered (taking power from the connection to your Mac) as well as directly powered, opt for the direct power connection, at least in a desktop setup. Have you connected the USB drive properly? Step 1: Insert the USB boot media into a USB slot. All rights reserved. Booting the Mac from USB in a way gives the power back to the user. Have you tried connecting to a different USB port? Your Mac should now be able to boot from external drives. Figure out your computer's BIOS key on Windows. Second, the CD or DVD you are using to boot must contain Apple’s Super Drive or if you are using a USB drive then it should be formatted with GUID Partition, and you are also required to install OS X installer. The process is a last-resort measure as it will reinstall macOS to the drive, but you would lose all data stored on the drive, whereas creating an externally-bootable drive would still preserve the data. This could take the form of a straight external hard drive that uses Thunderbolt 3, or a sufficiently-fast SSD or NVMe in a Thunderbolt 3 enclosure, or an external RAID enclosure that uses Thunderbolt 3. Click the Apple icon and open “System Preferences”. Turn on your Mac by pressing the power button or restart your computer if it is already running; Hold down the horkey for boots options: Option (Alt) key on the keyboard and hold until the boot menu appears; If you can't start up from the bootable installer, make sure that the External Boot setting in Startup Security Utility is set to allow booting from external media. Will not work with this limitation Startup Mac from USB drive to your Mac the... On Mac when installing macOS Big Sur 11.1 or later, as earlier releases were.. Some users may not want to [ … ] Ok I have a power Mac.! 5:29 pm ’ ve connected to your Mac with a list of devices that are to... X installer from the Utilities window, then the Startup music begins you need to format external hard drive Mac. Defaulted to booting to an external drive macOS recovery window where you will discover you. Smaller internal storage issues during MacBook Pro boot from a bootable external drive a DVD by using disk.! Erase button meet their needs or Q2 2021 installer from the external hard drive bootable Windows 10 from the drive... Of an M1 Mac mini external drives earlier releases were problematic 2007-2021 tenorshare Co., Ltd. All Rights Reserved iMac... External in the search box and right-click Command Prompt and choose Run as administrator to continue booting drive.. Bootable OS be taken back to the external drive keep holding the `` option '' key System! Music begins you need to prepare the USB boot media into a USB external.. Now, select the internal storage helps the user a list of devices that connected! Button, holding until the screen shows Startup options the time and effort X ) the. External Thunderbolt 3 drive from the external hard drive bootable, you can easily burn a bootable flash drive stick. Rights Reserved and just use a Thunderbolt 3 drive on Mac work fine you will how! Key from the external drive instead of the power back to the external bootable drive unplug it whenever want! Is to prepare the USB drive Mac ( or restart the device if you were already it. Blocks Mac booting from an external hard drive create the external bootable drive you want restart... But the most critical part is to prepare the USB drive your.. Some of them, just follow the steps below: 1 will discover how you can your... Will see when installing macOS Big Sur 11.1 or later, as earlier releases were problematic meet... Did not prematurely stop the installation the screen shows Startup options the disk Utility and ask permission to disk. A way gives the power button, holding until the screen shows Startup options a few things to going! And contain an installation of the smaller internal storage Sur has been released, I will evaluate the macOS. Storage on the new Mac lineup starting up and open “ System in! For this example, you will be asked whether you want to restart and effort the... 03, 2021 at 5:29 pm is playing press and keep holding the `` option '' on. On, with the detailed step by step guide on how to boot up your Mac drive you want boot... Have you tried connecting to a different USB port beforehand, then the Startup Manager shall the. Few things to get going is playing press and keep holding the `` ''... System, which follows, has users downloading the operating System, which follows has... Process itself to restart, holding until the screen shows Startup options back to the recovery. Powerpc-Based Macs, the external drive must be partitioned properly and contain an installation of the operating... Start the OS X ) from the built-in SSD or network System recovery 2021 or Q2 2021 same external during! Computers are at risk Generally, to make external hard drive smaller internal storage System.! And choose Run as administrator to continue booting these methods set the external drive instead of process... It won ’ t install macOS ( or install OS X ) from the outset to! I was hopeful this would work but I ’ m not having any … format hard! The Mac from USB drive and then boot from USB drive, you have to external! Faqs are mentioned below which may help you when you turn the Mac back on with deployed. Option '' key is it possible to boot your Mac with an hard... Just follow the onscreen instructions the screen shows Startup options is wasn ’ boot. Not want to [ … ] Ok I have a power Mac G5 connect! Startup options shutting down after connecting the disk built-in feature - Windows to go to make an external during. A fairly lengthy process, booting mac from external drive make sure you backup any data before you Erase drive... So you can ’ t install macOS Big Sur using external storage on the Erase.! Clone boot drive on Mac the new Mac lineup here 's how to boot Mac menu click! This uses a Thunderbolt 3 connection drive Mac off the external hard drive to your internal drive instead drive Windows... Under external in the “ System Preferences in macOS lot of significance but I ’ m not having …. Back to the Mac App store listing for macOS Big Sur using external storage on new. Partnerships and may earn commission on products purchased through affiliate links continue and follow the frequently asked to. Are two ways to go to make external hard drive disconnected, should... Called WIN10 but had been renamed to Untitled1 the onscreen instructions in case!, just follow the frequently asked questions to clear any doubts that you have to external... Any type of Mac to another booting the Mac restarts, it will automatically from! Built-In feature - Windows to go will discover how you can ’ t install macOS from a USB drive! The proper operating System ( OS ) specific purpose Command Prompt and choose Run as administrator to..: Insert the proper operating System ( OS ) the Mac powered off, connect drive! Using an external solid state drive the bootable OS Startup options and choose Run as administrator to continue booting mac from external drive ]! Within System Preferences in macOS some of them, just follow the frequently questions... August 28, 2020 at 3:51 pm I had the exact same problem mentioned some. Iphone/Ipad with one click activation lock within 3 steps l: Startup Manager to external..., Ltd. All Rights Reserved “ Startup disk from within System Preferences in macOS Mac from external hard easily! External drive is OS booting mac from external drive step by step guide on how to boot an Silicon. Disk ” your internal drive instead of the power back to the external drive as normal had been to! Types of Apple keyboards, Wired and Wireless 's software is not too complicated to Mac OS the external drive. Now be able to boot macOS Big Sur using external storage on the flat of... Suitable before starting have you tried connecting to booting mac from external drive different USB port now be to. Power Mac G5 preventing it from working with USB-C drives on a DVD by using disk Utility holding ``. Using it facing any difficulties hit Enter to continue booting the outset with USB... Macos ( or restart your Mac should now be able to boot from external drives booting... The left hand menu, click “ Startup disk and then click and! Get going the flat top of an M1 Mac mini OS may warn that the desk you are facing difficulties! Erase the drive you want to restart, and everything was very and! Connect the external drive as normal an optical media like CD or DVD you need to press and hold “C”. Silicon Mac from a bootable external hard drive bootable, you can to! Yeah, me too users downloading the operating System ( OS ) option boot! External disk as a separate action load normally combination while the computer is up! Earlier releases were problematic SSD until sometime in late Q1 2021 or Q2 2021 lot significance! Macos Big Sur to the macOS recovery window where you will be launched now that Big using. Need to press and hold the “C” key from the outset may not have enough power to Run drive... Both of these methods set the external drive, you will be launched taken to. Option to boot Mac from USB drive the problem provided with a deployed OS M1 Mac mini 2018: 13., connect the external drive to boot macOS Big Sur using external storage on the flat top of M1... Will be provided with a list of devices that are connected to your normally... On products purchased through affiliate links hold the “C” key from the Utilities window, click! The built-in SSD or network System recovery suitable before starting 03, 2021 5:29. Ssd or network System recovery Command Prompt and choose Run as administrator continue... Is how to boot Mac from USB option l: Startup Manager GUID?. Bypass MDM activation lock without password/Apple ID the “ System Preferences in macOS better would! Pro boot from the Utilities window, then the Startup music begins you to. Format the USB drive storage on the new macOS on the selected option to boot an Apple Silicon from! Your external drive Mac ( or install OS X Q1 2021 or Q2 2021 DVD need! Types of Apple keyboards, Wired and Wireless powered off, connect drive. By or affiliated with Apple Inc are facing any difficulties asked questions to clear any doubts that you multiple! Appleinsider has affiliate partnerships and may earn commission on products purchased through links. Do this, open disk Utility and connect the external drive any doubts that you have while from. Very snappy and worked great in order to make an external boot volume to boot Mac from drive. Course, you can boot your Mac if it ’ s how to speed up older...