Our goal is to take that DMG and write it to a USB drive so that your Mac can recognize it as a startup disk.
Go back to Disk Utility, select your newly formatted USB partition from the left panel. Click the button in the top menu bar.
Ensure the "Install macOS [Name].app" is in your /Applications folder.
Example for Sonoma: sudo /Applications/Install\ macOS\ Sonoma.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Press . create mac os x bootable usb installer from dmg
This comprehensive guide covers the exact methods to convert and flash a macOS DMG file to a USB drive using macOS, Windows, and Linux. 🛠️ Prerequisites and Preparation
Right-click the TransMac icon on your desktop and select .
Note: This option works perfectly if the DMG file is already a raw, bootable sector-by-sector image copy. Download and install . Run the application as an administrator. Click Flash from file and select your macOS DMG file. Our goal is to take that DMG and
Verify the name of the installer application in your /Applications folder matches the command you are typing.
sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/Installer --applicationpath /Applications/Install\ OS\ X\ Yosemite.app Use code with caution.
Note: Using rdiskX instead of diskX speeds up the write process significantly. Ensure the "Install macOS [Name]
Before attempting to create your bootable drive, ensure you have the following components ready:
the Disk Utility application via Spotlight or Applications > Utilities.
Terminal will copy the installer files to the drive. Once complete, it will display "Done." Method 2: Creating the Bootable USB on Windows