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You'll see the MacOS Utilities window choose "Disk Utility." Now you can choose to erase your startup drive, and choose "Mac OS Extended (Journaled)" as the operating system. If you plan to clean hard disk on your own, a disk wipe tool is necessary.
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Right-click the volume that you want to format, and then select Format. In the left pane, under Storage, select Disk Management. The select Control Panel > System and Security > Administrative Tools, and then double-click Computer Management. To get around that problem, hold down the Command + R keys when you turn on your Mac and let go when the logo appears. Download and install hard drive wipe software. Open Computer Management by selecting the Start button. If you want to format your Mac's system drive, you can't do that when the Mac is running normally because the drive is in use by the operating system. Usually, you'll want ExFAT, which is the default for the MacOS. Select the drive you want to format and then choose “Erase.”Ĥ. At the top of the window, click "Erase."ĥ. In the pop-up window, choose the file system you want to use.
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