The installer for OS X El Capitan downloads to your Downloads folder as a disk image named InstallMacOSX.dmg. Enterprise administrators: Download from Apple, not a locally hosted software-update server.

Download on a Mac that is using macOS Sierra 10.12.5 or later, or OS X El Capitan 10.11.6.

Download on a Mac that is compatible with that version of macOS.

If the installer opens after downloading, quit it without continuing installation. 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.The installer for macOS Monterey, macOS Big Sur, macOS Catalina, macOS Mojave, or macOS High Sierra downloads to your Applications folder as an app named Install macOS. 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 10.13 Install Disk and it will be opened. You will be notified with each 10% completion via the macOS notification system. Once you enter your admin password, DiskMaker X will start copying the necessary High 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 High Sierra onto it…ħ. 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 High Sierra. dmg file to open it and drag-and-drop the DiskMaker X app into the Applications folderĥ. Download High macOS Sierra from the Mac App StoreĤ.

Get an an empty flash drive with at least 8GB of storageĢ. 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. As soon as you launch the application, it tries to find the macOS Install program with Spotlight. DiskMaker X is an application built with AppleScript that you can use with many versions of OS X to build a bootable drive from macOS installer program (the one you download from the Mac App Store).

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