![]() Any settings you change or files you save there won’t be reflected on your primary installation. Otherwise you should have another Mac for creating a bootable USB. If you are not able to login to your Mac, you need to use Time Machine backup disk. You can use your Mac as normal, but keep in mind that it’s separate from the installation on your main internal hard drive. Format USB to Apple supported file system. This brings up the boot switcher and lets you boot from the external hard drive. solution to the annoying error when trying to burn a dmg file to a flash drive to mak. This can take fairly long, depending on the speed of your external drive and its connection to your Mac, so it’s best to have a fast hard drive with Thunderbolt, USB-C, or USB 3.0 connections.Īnd that’s it! When Disk Utility is done, you can shut down your Mac and hold down Option when booting it back up. this was done on a 10.6 snow, but is relevant to most if not all iOS. Within a few seconds, a macOS Utility screen should pop up 7. Connect your macOS High Sierra bootable USB 6. Hold down Command () + R to boot into recovery mode 5. Click on Startup Disk and select the installer 3. #Bootable mac usb with backup files installYou can also choose an ISO image, but that doesn’t have much use here.Ĭlick “Restore,” and Disk Utility will start the copying process. If you’d like to keep files synced between a desktop and laptop, expand your storage, or have a bootable backup copy of your system, there’s a hidden feature in Disk Utility that makes it easy. To install High Sierra from a USB using your startup disk drive: 1. Select your external drive in the sidebar, click “Restore” in the menu, and then select your main drive as the “Restore From” option. But, if you choose your external drive as the restore target, you can flip that action around and copy files from your main drive to the backup. To configure a new bootable USB drive via DiskPart, open a Command Prompt and enter the following lines (change 4 and F for your setup): diskpart list volume select volume 4 clean create partition. See the might and convenience of Handy Backup for creating a bootable backup disk on USB The Disaster Recovery utility is perfect bootable backup software.
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