![]() There's the super easy way with the graphical user interface and the only slightly less easy way that requires some light Terminal use. A Mac that you have administrator access to, duh.An 8GB or larger USB flash drive or an 8GB or larger partition on some other kind of external drive.We've created Sierra USB stick from both El Capitan and Sierra, but your experience with other versions may vary. The macOS 10.12 Sierra installer from the Mac App Store in your Applications folder.For newer Macs, use a USB 3.0 drive-it makes things significantly faster. The installer will delete itself when you install the operating system, but it can be re-downloaded if necessary. ![]() If you want a GUI, we're recommending a different app than last year-take a look at Ben Slaney's Install Disk Creator from MacDaddy. There are other apps out there that do this, but this one is quick and simple. If you want to use this USB installer with newer Macs as they are released, you'll want to periodically re-download new Sierra installers and make new install drives periodically. ![]() Apple rolls support for newer hardware into new macOS point releases as they come out, so this will help keep your install drive as universal and versatile as possible. Install Disk Creator will automatically detect macOS installers on your drive and suggest one for you, listing its icon along with its path. You can navigate to a different one if you want, and you can also pick from among all the storage devices and volumes currently connected to your Mac through the drop-down menu at the top of the window. Once you're ready to go, click "Create Installer" and wait. A progress bar across the bottom of the app will tell you how far you have to go, and a pop-up notification will let you know when the process is done. This should only take a few minutes on a USB 3.0 flash drive in a modern Mac, though using USB 2.0 or other interfaces will slow things down. If you don't want to use the Install Disk Creator, Apple has included a terminal command that can create an install disk for you. Sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ macOS\ Sierra.app -nointeraction #MAC SIERRA SCAN FOR NEW SD CARD MAC OS#Īssuming that you have the macOS Sierra installer in your Applications folder and you have a Mac OS Extended (Journaled)-formatted USB drive named "Untitled" mounted on the system, you can create a Sierra install drive by typing the following command into the Terminal. The command will erase the disk and copy the install files over. #MAC SIERRA SCAN FOR NEW SD CARD INSTALL# Give it some time, and your volume will soon be loaded up with not just the macOS installer but also an external recovery partition that may come in handy if your hard drive dies and you're away from an Internet connection. #MAC SIERRA SCAN FOR NEW SD CARD INSTALL#.#MAC SIERRA SCAN FOR NEW SD CARD MAC OS#.Luckily, it's not hard to make one-either with a handy graphical user interface or some light Terminal use.įurther Reading macOS 10.15 Catalina: The Ars Technica reviewĪpple hasn’t shipped operating systems on physical media in a full decade, but there are still good reasons to want a reliable old USB stick for macOS Catalina. A Mac that you have administrator access to. A 16GB or larger USB flash drive or a 16GB or larger partition on some other kind of external drive.We've created a USB stick from both Mojave and Catalina, but your experience with other versions may vary. The macOS 10.15 Catalina installer from the Mac App Store (in High Sierra or older macOS versions) or the Software Update preference pane in Mojave.Ī USB 3.0 drive will make things significantly faster, but an older USB 2.0 drive will work in a pinch 8GB drives worked for Mojave and older versions of macOS, but the Catalina installer is just a little too large to fit.The installer will delete itself when you install the operating system, but it can be re-downloaded if necessary.If you want a GUI, take a look at Ben Slaney's Install Disk Creator from MacDaddy.
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