Open the Disk Utility app on your Mac using one of the following methods, depending on the type of disk or volume you want to erase: If you want to erase your startup disk or startup volume: Start up from macOS Recovery, then choose Disk Utility from the macOS Utilities window. Oct 09, 2019 It's in the lower-right corner of the pop-up window. Disk Utility will start formatting the drive. A progress bar will appear at the top of the window to track the format process. Depending on the size of the hard drive and the speed of your Mac, allow several minutes for the process to complete. Today, we will talk about how to format or reformat SSD on Mac. You can run easy-to-use Mac disk formatting software to easily format internal SSD or external SSD under Mac OS. Solution 1: format & quick format SSD on Mac. Disk Utility is a useful application inside your Mac system. It can help you format & quick format SSD on Mac.
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Disk Utility User Guide
In Disk Utility on Mac, you can erase and reformat storage devices to use with your Mac. Erasing a storage device deletes everything on it.
Dec 15, 2017 Select Disk Utility and click on the Continue button. When Disk Utility loads select the drive (usually, the out-dented entry) from the side list. Click on the Erase tab in Disk Utility's main window. A panel will drop down. Set the partition scheme to GUID. Set the Format type to Mac OS Extended (Journaled.).
- If you have any files you want to save, copy them to another storage device.
- Open the Disk Utility app on your Mac using one of the following methods, depending on the type of disk or volume you want to erase:
- If you want to erase your startup disk or startup volume: Start up from macOS Recovery, then choose Disk Utility from the macOS Utilities window.
- If you want to erase any other type of disk or volume: Double-click Disk Utility in the /Applications/Utilities folder.
- Choose View > Show All Devices.
- In the sidebar, select the storage device you want to erase, then click the Erase button .
- Click the Scheme pop-up menu, then choose GUID Partition Map.
- Click the Format pop-up menu, then choose a choose a file system format.
- Enter a name.
- (Optional) If available, click Security Options, use the slider to choose how many times to write over the erased data, then click OK.Secure erase options are available only for some types of storage devices. If the Security Options button is not available, Disk Utility cannot perform a secure erase on the storage device.Writing over the data three times meets the U.S. Department of Energy standard for securely erasing magnetic media. Writing over the data seven times meets the U.S. Department of Defense 5220-22-M standard.
- Click Erase, then click Done.
Note: With a solid-state drive (SSD), secure erase options are not available in Disk Utility. For more security, consider turning on FileVault encryption when you start using your SSD drive.
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See alsoApple Support article: How to erase a disk for MacPartition a physical disk in Disk Utility on MacFile system formats available in Disk Utility on MacFormat a disk for Windows computers in Disk Utility on MacEncrypt and protect a storage device with a password in Disk Utility on Mac