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.
- Disk Utility is a system utility for performing disk and disk volume-related tasks on macOS and Mac OS X systems. With this easy-to-use program, you can perform tasks as the following: Mount, unmount, and eject connected hard drives including SSDs.
- Download Blackmagic Disk Speed Test for macOS 10.10.0 or later and enjoy it on your Mac. Disk Speed Test is an easy to use tool to quickly measure and certify your disk performance for working with high quality video!
Clone of hard drive saves your precious data under physical/logical disk failure.
Disk Utility Download Mac
Your hard drive may be new or probably from the best manufacturer, but you can never guaranty “It won’t fail”. Apart from being old, there are lots many other reasons including mechanical, electrical and firmware failure, which can make your Mac hard drive crash. If the drive with many of your extremely important business documents and personal files fail, the loss is simply beyond explanation. However, you can easily overcome such situations of data loss by keeping a clone copy of your Mac hard drive.
Disk Utility can clone your Mac hard drive.
Apple is indeed right in its saying that the Mac OS X has been built with all the amenities that a user requires for his/her daily computer use. For keeping a safe copy of your precious data in the Mac hard drive, Apple has included an option in Disk Utility – ‘Restore’. This option in Disk Utility allows you to copy the entire data of your hard disk to another hard drive or any external media. With this ‘Restore’ option, you can also restore data from any previously created disk image stored on your local drive or any network-attached media.
The process of backing up data using Disk Utility is simple and can be performed in few easy steps as below:
How to Clone Mac Drive using ‘Restore’ Option of Disk Utility:
- Go to the Utilities folder and run Disk Utility.
- Click on the tab, ‘Erase’.
- From the left side pane, select the media, which you want as your backup or destination drive.
- From the ‘Format’ drop down select the format type as Mac OS Extended (Journaled). Click the ‘Erase’ button and wait patiently for some time to remount the drive on the Desktop.
- From Disk Utility main window, click the ‘Restore’ tab.
- From the left pane of the interface, select the source drive to be cloned by dragging it to the ‘Source’ entry field.
- Similarly, from the left pane select the backup or destination media by dragging it to the ‘Destination’ entry field.
- From the desktop of your Mac, select the destination drive icon and execute the command – ‘COMMAND-I’ to open the ‘Get Info’ window. Here, ensure that under the ‘Ownership and Permissions’ section, the box ‘Ignore Permissions on this Volume’ is unchecked.
- Now, from the Disk Utility main window, click the ‘Restore’ button.
Note: The backup copy created using Disk Utility is not bootable. This Backup copy is a disk image from which you can easily restore the entire data of your source Mac drive. However, if you want to create a bootable clone of your Mac hard drive, you can use Stellar Drive Clone software.
Stellar Drive Clone is a Mac Hard Drive Cloning software, using which you can create an exact clone of your Mac hard drive so that in case of drive failure, you can continue your on-going works by booting from the same. Along with this, this utility provides options to create clone or image of Mac volumes as well as selected region of your hard drive.
Mac Os X Utilities
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.
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. Download format factory mac os.
Mac os high sierra download. 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.
Free Mac Disk Utility