Advertisement The Easy Option: Disk Creator The easiest way to create a USB flash installer is with the free program, Disk Creator.Advertisement Download the macOS Sierra installer and Disk Creator.If you have any other data on that flash drive, back it up now, because the installer will delete everything on it.
Open Disc Creator and click the Select the OS X Installer button. When its done, insert your USB drive into any Mac, then launch the installer by holding down the Option key when you boot up your computer. Prepare A Flash Drive In For Windows Boot Download An ExtraGO Media may get a commission Satisfyer Men Heat Vibration Buy for 55 from Bellesa Boutique The DIY Option: Terminal If you dont want to download an extra bit of software, you can make your own installer USB drive using Terminal. Make sure the drive is formatted for OS X Extended (Journaled). Its best to disconnect any other external hard drives or flash drives so you dont mix them up. Prepare A Flash Drive In For Windows Boot Password When PromptedType (or copy and paste) this command into Terminal, replacing Untitled with the name of your drive, then press Enter: sudo ApplicationsInstall macOS Sierra.appContentsResourcescreateinstallmedia --volume VolumesUntitled --applicationpath ApplicationsInstall macOS Sierra.app --nointeraction say Done Type in your password when prompted and press Enter. Let the command line do its work and dont interrupt it until you see the final line that says Done. ![]() Thorin Klosowski Posts Twitter Share This Story Get our newsletter Subscribe More from Lifehacker How to Decide Between Resistance Bands and Dumbbells How to View the Harvest Moon and Mars This Week How to Tell If Someone Is Flirting With You, According to Science How to Lightly Cook Delicate Vegetables DISCUSSION greenamerican 92016 4:07PM Curious about using a thumb drive to upgrade. Is that possible Somehow lately I cant seem to upgrade w a USB without it saying to download it from the Apple Store instead. Why cant I just use an OSX installation discdrive Its not like they are concerned about piracy as it is free. Really sucks as a technician to have to get peoples Apple ID account info to upgrade it. ![]()
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