


Click on the Options button, set the partition scheme to GUID then click on the OK button. Under the Volume Scheme heading set the number of partitions from the drop down menu to one.Click on the Partition tab in the DU main window. After DU loads select your newly installed hard drive (this is the out-dented entry with the mfgr.'s ID and size) from the left side list.Select Disk Utility from the main menu and click on the Continue button.Wait patiently - 15-20 minutes - until the Recovery main menu appears. Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. If your computer is a 2011 model or later then you can do the following:īe sure you have backed up your files because the following procedure will remove everything from the hard drive. Use the installer to restore OS X to the drive.

Use Disk Utility to erase the internal drive. Boot from another drive or from the discs that came with the computer when it was new.
