A clean installation allows you to get rid of junk apps and files that may have accumulated over time. These issues include when your Mac refuses to boot or when you need to recover system files that seem to be lost.Īnother benefit of using a bootable disk for a macOS installation is that you can perform a clean installation. You can also use the built-in recovery tools that come with the macOS installer to troubleshoot and fix different kinds of issues.

This can save quite a bit of time, considering the most recent versions of macOS have an installer size of 12GB.

Now all you have to do is restart your Mac and and after you here the chime sound, press the Option ( Alt ) key until you see the option to choose the flash drive to boot from.Why Would You Need to Install macOS From a USB?Ĭreating a bootable USB drive and using it to reinstall macOS is a bit of a lengthier process compared to simply updating macOS from the Software Update section of the System Preferences, but it has its benefits.īut creating a bootable USB disk allows you to install or update macOS on multiple systems without having to download the installer on each Mac. When you’re done, the app will tell you that the boot disk is ready, you’ll see that your flash drive has been renamed as macOS 10.12 Install Disk and it will be opened. Once you enter your admin password, DiskMaker X will start copying the necessary Sierra files onto your flash drive. Now the app will format your flash drive and ask you for your admin password. The app will ask you about your thumb drive, and it will tell you that will be completely erased before copying macOS Sierra onto it…Ĩ. If you downloaded it from the app store ( step 2 ), choose ‘Use this copy’ħ. Once it found your Sierra copy, it will ask you if you want to use the copy that it found or you want to use another copy. Now, the app will search for a copy of macOS Sierra. You can choose Yosemite, El Capitan and of course, Sierra. When you load the app, it will ask you which version of macOS do you want to make a boot disk of. dmg file to open it and drag-and-drop the DiskMaker X app into the Applications folderĥ. Get an an empty flash drive with at least 8GB of storageĤ. Jump over the break to learn how to use DiskMaker X…ġ. You can use the Install drive to fully re-install the OS on a freshly formated drive, or install it on your many Macs without re-downloading the full installer. It’s the easiest way to build an macOS Installer in a few clicks ! Then, it proposes to build a bootable install disk and make it look as nice as possible.

Diskmaker x 7 for macos high sierra