If you used Disk Utility from macOS Recovery, you can now restart your Mac: choose Apple menu  > Restart. The order of repair in this example was Macintosh HD - Data, then Macintosh HD, then Container disk4, then APPLE SSD. Click the Gear button underneath the Volumes and select 'Format.' This will open the formatting options. Most USB drives will only have one volume, but if yours has multiple volumes you can select one or all of them. Keep moving up the list, running First Aid for each volume on the disk, then each container on the disk, then finally the disk itself. Select at least one volume on the USB drive. If you're asked for a password to unlock the disk, enter your administrator password.Īfter Disk Utility is done checking the volume, select the next item above it in the sidebar, then run First Aid again.If the button is dimmed and you can't click it, skip this step for the disk, container, or volume you selected.If there is no Run button, click the Repair Disk button instead.

In this example, the last volume on the disk is Macintosh HD - Data.Ĭlick Run to begin checking the selected volume for errors. Some Linux variants may require larger volumes, so pay attention to the requirements when downloading. For each disk that you're repairing, start by selecting the last volume on that disk, then click the First Aid button or tab. First: Prepare Your USB Drive When youre looking to create a bootable Linux USB drive on a Mac, the first step is to make sure youve got the right USB drive for the job, and that its formatted correctly to avoid any problems.

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