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Jan 27, 2012 · In the left pane, right click the USB Drive and select Format Disk for Mac. In the left pane, right click the USB Drive and select Restore with Disk Image. Point to your .dmg (or choose All Files to select an .iso) file and click Open.
- Use TransMac, which has a 15-day trial period and works flawlessly. In the left pane, right click the USB Drive and select Format Disk for Mac. I...
- TransMac worked for me, but first you need to partition your USB drive with GPT. It will not work if partitioned as MBR. diskpart on Windows can do...
- As far as I know, the only way to properly create a bootable Lion disc/disk is to use Disk Utility on a working Mac. However, the other option is t...
- Necromancing. I couldn't get it to work with TransMac. TransMac couldn't read the dmg images. It said 0 bytes, and finished in sub-second speed....
Feb 27, 2024 · Click on the DMG file and press Open. Select and Open High Sierra DMG. Wait for a little bit for the process to write the DMG file to USB drive. Restoring image to Disk. After the process ends, your bootable USB for macOS High Sierra is ready. The process was simple and quick.
- Overview
- What you need to create a bootable installer
- Use Terminal to create the bootable installer
- Commands
- Use the bootable installer
- Learn more
You can use an external drive or secondary volume as a startup disk from which to install the Mac operating system.
These advanced steps are primarily for system administrators and other experienced users who are familiar with entering commands in Terminal.
•A USB flash drive or other secondary volume with at least 14GB of available storage, formatted as Mac OS Extended
•A full macOS installer
To download a full installer, your Mac must be using macOS High Sierra or later, the latest version of macOS Sierra, or the latest version of OS X El Capitan. Your Mac must also be compatible with the macOS that you're downloading. Enterprise administrators: download from Apple, not a locally hosted update server.
Download a macOS installer using the App Store or your browser
1.Plug the USB flash drive into your Mac.
2.Open Terminal, which is in the Utilities folder of your Applications folder.
3.Type or paste one of the commands below into Terminal, then press Return to enter the command. Each command assumes that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. If the volume has a different name, replace MyVolume in the command with the name of your volume.
4.When prompted, type your administrator password. Terminal doesn't show any characters as you type. Then press Return.
5.When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the volume is erased.
6.After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume. Click OK to allow the copy to proceed.
Depending on which macOS you downloaded, enter one of the following commands in Terminal as instructed above.
•Remember to replace MyVolume in the command with the name of your volume.
Mac with Apple silicon
1.Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing. A bootable installer doesn't download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model. 2.Turn on the Mac and continue to hold the power button until you see the startup options window, which shows your bootable volumes. 3.Select the volume containing the bootable installer, then click Continue. 4.When the macOS installer opens, follow the onscreen installation instructions.
Any other Mac
1.Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing. A bootable installer doesn't download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model. 2.Turn on your Mac, then immediately press and hold the Option (Alt) key. 3.Release the Option key when you see a dark screen showing your bootable volumes. 4.Select the volume containing the bootable installer. Then click the onscreen arrow or press Return. 5.If you're using a Mac with the Apple T2 Security Chip and you can't start up from the bootable installer, make sure that Startup Security Utility is set to allow booting from external or removable media. 6.Choose your language, if prompted. 7.Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.
For information about the createinstallmedia command and the arguments you can use with it, make sure that the macOS installer is in your Applications folder, then enter the appropriate path in Terminal:
/Applications/Install\\ macOS\\ Sonoma.app/Contents/Resources/createinstallmedia
/Applications/Install\\ macOS\\ Ventura.app/Contents/Resources/createinstallmedia
/Applications/Install\\ macOS\\ Monterey.app/Contents/Resources/createinstallmedia
/Applications/Install\\ macOS\\ Big\\ Sur.app/Contents/Resources/createinstallmedia
/Applications/Install\\ macOS\\ Catalina.app/Contents/Resources/createinstallmedia
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Apr 2, 2024 · Mountain Lion 10.8. Lion 10.7. Double-click the .dmg file to open it and see the package (.pkg) file within. Double-click the .pkg file, then follow the onscreen instructions to install the macOS installer into your Applications folder. Open your Applications folder and double-click the macOS installer, named Install [ Version Name ].
May 8, 2023 · In Short. To create a macOS Bootable USB on Windows 11, you need a 16GB USB drive and a macOS DMG file. First, prepare the USB disk using either diskpart Command Prompt utility. Then, use TransMac to load the macOS DMG file onto the USB drive. Once done, insert the macOS bootable USB into your Mac's port, press and hold the 'Option' key while ...
Mar 31, 2022 · Step 1: Connect a USB drive with at least 16 GB of storage space to your Windows PC and move all data from USB drive to a safe place as the drive will be erased while preparing macOS bootable USB. Step 2: Visit this page of TransMac and download the latest version of TransMac software on your PC. TransMac is a paid software but the 15-day trial ...
Jul 19, 2021 · Otherwise, you'll need to format to "Mac OS Extended (Journaled)" for El Capitan and earlier. When you're sure about your decision, click "Erase" and confirm. Finally, quit Disk Utility and select "Reinstall macOS" or "Install macOS" (or Mac OS X, for older versions) from the macOS Utilities window. Follow the rest of the prompts to finish the ...
