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#HOW TO USE A BOOTABLE USB IMAC HOW TO#
#HOW TO USE A BOOTABLE USB IMAC MAC OS#

Mojave sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/MyUSB You need to replace “ MyUSB” with the name of your USB drive, or you can rename your drive “ MyUSB.” You can find the name of your USB drive in the left sidebar of a Finder window.Ĭatalina sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/MyUSB

Type in the following commands, depending on your version of macOS.

Open a Finder window and go to Applications.

#HOW TO USE A BOOTABLE USB IMAC HOW TO#

If you want to find out how to format your hard drive for Mac, check out our guide here.

#HOW TO USE A BOOTABLE USB IMAC MAC OS#

You will also have to format your disk as Mac OS Extended. Note: If your USB drive is not blank, the contents will be completely erased in the next steps.

Insert a USB drive into your Mac’s USB port.

Click Install macOS Catalina in the top-left corner of your screen.

Quit the Installation before clicking Continue.

You will know the download is complete when you see an installation window for the macOS appear.

Then click Download in the pop-up window.

Then click View when you find the right OS.

Before that, there was Mojave, High Sierra, Sierra, El Capitan, Yosemite, and Mavericks.

Search for the OS you want to install on your bootable USB.

Then click Applications in the left sidebar of the Finder window that opens.

You can do this by clicking the Finder icon in your Dock. Note: You will need a flash drive or external hard drive that has at least 8GB of storage space. The command you enter will depend on the OS you want to install. Then use a Terminal command to install the OS on your USB drive.

To make a bootable USB, you need to download the OS from the App Store. Here’s how to make a bootable USB on a Mac. It can also help if you want to install the OS on multiple devices. This can save you if your computer ever experiences problems connecting to the internet or booting in Recovery Mode. When you have a bootable USB with your OS (operating system) on it, you can install it on a computer without having to download it from the App Store.