His app automates the process of making a bootable install disk for both Lion and Mountain Lion—just run the app and let it do its thing.

Just with a click, it clones the boot disk to create a bootable USB and gets your macOS updated or boot from the installer.

Instead, there's a way to download a full install of the latest version of High Sierra and make install media using the Terminal — AppleInsider shows you how.

How to use a boot disk What is a boot disk and why do I need one? A boot disk is a floppy or a CD that you can use to boot your computer into a state in which you can use it to fix a problem.

Though you can install Mavericks (OS X 10.9) directly from your Mac's hard drive, a bootable installer drive can be more convenient for installing the OS onto multiple Macs. And if your Mac is ...

A bootable USB key is a convenient way to install operating systems on netbooks without optical drives, or carrying around a Live OS with you at all times. It especially makes sense if you're ...

How to create an external, bootable work disk with macOS Sequoia Not every external drive will do, but most will.