It’s a good idea to keep your Mac optimised when you’re asking to create a bootable USB drive. It’s a handy appliance-even more so if you use a small external flash drive that you can carry in a pocket. You can also use it to reinstall the operating system on a Mac that won’t startup. Such a tool allows you to install any version of macOS on multiple Apple computers easily. Why would you want to create an external boot drive for your Mac? You can now quit Terminal and eject the volume.A bootable macOS (previously, OS X) install disk is a portable device containing all the necessary installation files for a selected version of macOS. When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Catalina.Terminal shows the progress as the bootable installer is created. When prompted, type Y to confirm that you want to erase the volume, then press Return.Terminal doesn't show any characters as you type your password. When prompted, type your administrator password and press Return again.If it has a different name, replace MyVolume in these commands with the name of your volume. These assume that the installer is still in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. Type or paste one of the following commands in Terminal.Open Terminal, which is in the Utilities folder of your Applications folder.
Make sure that it has at least 12GB of available storage and is formatted as Mac OS Extended. Connect the USB flash drive or other volume that you're using for the bootable installer.Use the 'createinstallmedia' command in Terminal You will create the bootable installer from this app, not from the disk image or. It installs an app named Install OS X El Capitan into your Applications folder. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. Now, click on ‘Erase.Įl Capitan downloads as a disk image. 8GB or ‘Greater’ USB ‘Install OS X Yosemite.zip’ file downloaded from Mac Store (Download from here) Now, let’s move to the actual tutorial to create bootable OS X Yosemite USB, Connect your USB drive with Mac. While there are multiple methods that will work, here’s the easiest way to create a bootable OS X 10.10 Yosemite USB Installer for the Yosemite Public Beta. The traditional method of creating a bootable OS X USB installer no longer works, so you’ll need to follow a new approach when dealing with OS X Yosemite. Step 8: Now, after download completes successfully - install the boot loader and the necessary kekstov. Step 7: When installation gets complete, reboot again with the USB stick or DVD, but choose a boot menu section with a freshly installed Mac OS X Yosemite. Step 6: Now, reboot, load with flash to make Mac OS X installation.
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