![]() In each command, replace the name MyVolume with the name of your volume. These commands are dependent on the installer being in your Applications folder. ![]() At the Terminal prompt, type or copy and paste (easier and more accurate) one of the following commands.Find the Terminal app in the Utilities folder of your Applications folder.For this article, I used a 2TB USB hard disk drive erased and formatted as Mac OS Extended and given the name Installer. Plug in the USB flash drive or formatted volume you’re using for the bootable install disk.When the file is downloaded, double-click it to install an app named “Install OS X El Capitan” into your Applications folder. The installer has the name “Install macOS ”.įor Mac OS X El Capitan, the link downloads a disk image file named InstallMacOSX.dmg. For macOS Big Sur, macOS Catalina, macOS Mojave or macOS High Sierra, the links download an installer directly into your app folder. To ensure that you’re getting a valid, un-hacked, and legal version of macOS, you need to download it directly from Apple. Once your bootable USB installation media is ready, remove it and insert it into your Mac, power it on, hold down the Option key, and select the USB you just created to reinstall Mac OS X.The macOS Big Sur download page in the Mac App Store Depending on your computer and other variables, it could take one or two hours to complete the process. Use the Restore Disk Image to Drive dialog box to browse for the DMG file with the installation files for Mac OS X Yosemite in this case, and click the OK button to create a bootable USB of the operating system. In the warning dialog box, click the Yes button. On the left pane, you’ll see all the Windows PC drives listed right-click the USB drive you intend to use to reinstall Apple’s OS X and select the Restore with Disk Image option. (You’ll be prompted to Enter Key or Run because we’ll be using it once, click the Run option.) ![]() Right-click the TransMac software icon and Run as administrator. Make sure you take off any important documents.) (Remember that all the data in the USB will be erased. Insert the USB drive that you’ll use to fix your installation of OS X. (If you want to support the developer, you can purchase the full version.) Quick note: TransMac is a paid software, but it has a 15-day trial solution that gives us more than enough time to move the DMG files to the USB drive from Windows. Type the following command to select the storage and press Enter: select disk 1 Type the following command to determine the USB flash drive and press Enter: list disk Type the following command to open Diskpart and press Enter: diskpart Search for Command Prompt, right-click the top result, and select the Run as Administrator option. Use these steps to set up a USB drive with a GPT partition: To do this, you’ll need to use the Diskpart command-line utility on Windows 10. Create Mac OS X bootable USB installation mediaīefore using TransMac, you first need to partition your USB flash drive with a GPT partition, as a normal MBR partition may not work. Now that you have all the necessary ingredients, you’re ready to make a Mac OS X bootable USB using the DMG file of the operating system with the steps below.
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