- #HOW TO CREATE A BOTEABLE MACOS HIGH SIERRA USB INSTALL#
- #HOW TO CREATE A BOTEABLE MACOS HIGH SIERRA USB CODE#
- #HOW TO CREATE A BOTEABLE MACOS HIGH SIERRA USB DOWNLOAD#
Inside the disk image is an installer named InstallMacOSX.pkg.
#HOW TO CREATE A BOTEABLE MACOS HIGH SIERRA USB DOWNLOAD#
#HOW TO CREATE A BOTEABLE MACOS HIGH SIERRA USB INSTALL#
If you want to start over and wipe out the data, you need to go into Disk Utility to reformat the internal drive first, and then install macOS Sierra.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. If you want to install Sierra and leave the data intact, select Install OS X. Your Mac will display an OS X Utilites window.(You don’t need to select a network to proceed.) Click on the external drive and hit Return. After a few moments, your Mac should display the Startup Manager, which will show you the available boot drives.Press down on the Option key while the Mac boots. Plug your external drive into your Mac.You can quit Terminal and your drive is ready for use. You should see Terminal display a “Copy complete” and Done notice.
#HOW TO CREATE A BOTEABLE MACOS HIGH SIERRA USB CODE#
(In the Terminal command you will use, I use Untitled to represent your external drive. Connect the external drive to your Mac.If your really don’t want to use Terminal, there are a couple of free apps you can use. The process detailed below involves the Terminal. Change the name of your drive to Untitled you need to do this for the steps below. The drive will be reformatted automatically as part of the process. I’ve used different drives with success, including a VisionTek 120GB USB 3.0 Pocket Solid State Drive ($83 on Amazon) and an old 8GB Iomega Micro Mini Hard Drive.ĭon’t worry if the drive isn’t formatted for the Mac. You can use a USB flash drive or a hard drive with room for the installer software. If it automatically launches after download, quit the installer. Look for macOS Sierra in the list of apps that you’ve bought, and click on the Download button. You can download it again if you go to Purchased in the App Store. If you’ve already upgraded your Mac to Sierra, the installer is removed from the Applications folder.
Keep the installer in the Applications folder.