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Mac App Store Preview. PRO Disk Cleaner 4+ Free your Hard Drive Space AppYogi Software Free; Offers In-App Purchases; Screenshots. Disk Cleaner does all the work for you! We’ve optimized the most efficient locations to quickly scan and remove all the junk taking up your valuable disk space. We’re optimized for the newest. Jun 18, 2020 Disk utility has been used in Mac systems to erase different types of storage devices such as SSD, Hard disk, flash drive, etc. Data utility is a built-in function in Mac systems, which is used to manage internal disks and external storage devices. Disk utility is also used to erase a partition/volume on your disk. Store data on disk images. Create a disk image. Convert a disk image to another format. Resize a disk image. Restore a disk image to a disk. Add a disk to a disk set. If a disk in a disk set on Mac fails or is missing. Keyboard shortcuts. Encrypt and protect a storage device with a password in Disk Utility on Mac. Sep 30, 2015 Restart your Mac. Immediately hold down the Command (⌘) and R keys after you hear the startup sound to start up in OS X Recovery. When the Recovery window appears, select Disk Utility then click Continue. Select the indented volume name of your startup disk from the left side of the Disk Utility window, then click the Erase tab.

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How To Format Hard Drive For Mac

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Disk Utility User Guide

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When you format an internal or external storage device, you can encrypt and protect it with a password. If you encrypt an internal device, you must enter a password to access the device and its information. If you encrypt an external device, you must enter the password when you connect the device to your computer.

Important: If you encrypt an external storage device, you can’t connect it to an AirPort base station for Time Machine backups.

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To encrypt and protect the device with a password using Disk Utility, you must erase the device first. If the device contains files you want to save, be sure to copy them to another storage device or volume.

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If the device contains any files you want to save, copy them to another storage device or volume.
In the Disk Utility app on your Mac, choose View > Show All Devices.
In the sidebar, select the storage device you want to encrypt.
Click the Erase button in the toolbar.
Enter a name for the volume.
Click the Scheme pop-up menu, then choose GUID Partition Map.
Click the Format pop-up menu, then choose an encrypted file system format.
Enter and verify a password, then click Choose.
To change the password later, select the volume in the sidebar, then choose File > Change Password.
(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, you can’t use Disk Utility to 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.

You can encrypt your data without erasing it by turning on FileVault in the Security & Privacy pane of System Preferences (see Encrypt Mac data with FileVault).

You can also encrypt a disk and protect it with a password without erasing it. See Encrypt disks or memory cards to protect your Mac information.

See alsoErase and reformat a storage device in Disk Utility on MacPartition a physical disk in Disk Utility on Mac