Set the format type to Mac OS Extended (Journaled.) Optionally, click on ![]() Click on the Erase tab in the DU main window.ģ. After DU loads select your startup volume (usually Macintosh HD) from the Select Disk Utility from the main menu and click on the Continue button.Ģ. Install or Reinstall Lion/Mountain Lion from Scratchīe sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.ġ. If you need to erase the drive and reinstall: Select the Recovery HD and click on the downward pointing arrow button. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Open DU, select your volume, click on the Enable Journaling icon in the DU toolbar. ![]() ![]() However, you do not have to erase the drive in order to Journal it. The erase option is not disabled, you simply cannot erase a startup drive. You are posting about Lion in 10.3 and earlier forum.
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