Create Encrypted Dmg Os Sierra Password To Access

Create Encrypted Dmg Os Sierra Password To Access

If you encrypt an internal device, you must enter a password to access the device and its information.

Important: If you encrypt an external storage device, you cant connect it to an AirPort base station for Time Machine backups.

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.

Open Disk Utility for me 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 Scheme pop-up menu, then choose GUID Partition Map.

Click the Format pop-up menu, then choose an encrypted file system format.

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 cant 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.

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 also Erase and reformat a storage device in Disk Utility on Mac Partition a physical disk in Disk Utility on Mac.

Create Encrypted Dmg Macos Sierra