All the data on the drive (all partitions) will be erased, so be sure to backup. Steps 4-6 are optional but should be used on a drive that has never been formatted before, if the format type is not Mac OS Extended, if the partition scheme has been changed, or if a different operating system (not OS X) has been installed on the drive.Īs I said this is a destructive process. The format process will take 30 minutes to an hour or more depending upon the drive size. Set the format type to Mac OS Extended (Journaled, if supported.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.Ħ. Click on the Erase tab in the DU main window.ĥ. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list.
Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the volume(s) mount.Ĥ. Set the number of partitions from the dropdown menu (use 1 partition unless you wish to make more.) Click on the Options button and select the GUID partition scheme then click on the OK button. Click on the Partition tab in the DU main window.ģ.
After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger.)Ģ. After the installer loads select your language and click on the Continue button.
