Installer From Dmg [upd] — Create Mac Os X Bootable Usb

diskutil list Look for your USB drive. It will look something like /dev/disk2 (external, physical) . Note the identifier (e.g., disk2 ). Step 2: Unmount the Drive (But keep it connected) diskutil unmountDisk /dev/disk2 (Replace disk2 with your identifier) Step 3: Write the DMG to the USB Use the dd command (disk duplicator). Be extremely careful.

sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ High\ Sierra.app You don't need to type the whole path. Type sudo (with a space), then drag the createinstallmedia file from the .app (Right-click the app > Show Package Contents > Contents > Resources) into the Terminal window. Then type --volume and drag your USB drive (MyVolume) from the Finder sidebar into the Terminal. Step 4: Follow the Terminal Prompts Terminal will ask for your administrator password (it will not show characters as you type—this is normal). Then it will ask: If you wish to continue type (Y) then press return: Type Y and press Enter. create mac os x bootable usb installer from dmg

This method is extremely powerful. If you write to the wrong drive, you will lose data irrecoverably. Step 1: Identify the USB Drive Open Terminal and run: diskutil list Look for your USB drive

The process takes 15–30 minutes. Once you see Copy complete and Done. , your bootable USB is ready. Sometimes, the DMG you have is already a bootable image . This often happens with older macOS versions (Lion, Mountain Lion, Mavericks) or custom recovery DMGs. In this case, you don't need an installer app; you write the DMG directly to the USB. Step 2: Unmount the Drive (But keep it