Reformat USB Flash Drive To create the bootable installer, plug the USB drive into your current Mac. Click the Go menu and select Utilities. Open Disk Utility, select the USB drive, and click the ...

You can still make an external macOS bootable drive, but Apple's tighter security procedures mean you have to prepare for it before your internal drive fails. Here's how to do it all, and what's been ...

There are a bunch of tools that let you load an operating system onto a USB flash drive, allowing you to boot from that drive and either run or install the OS. But most of those tools are only ...