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Disk Utility, in all of its incarnations, has always had a restore function, a way to copy a disk volume or image file to another volume, creating an exact copy. We often think of this as cloning a drive, so you have an exact copy for backup or archiving purposes.
The advantages of cloning are many, but the one that is repeatedly mentioned in troubleshooting guides, as well as guides to installing new versions of the Mac OS, is the clone’s ability to be used as a Mac’s startup drive. Provided the source for the clone was a bootable startup drive, then the destination will generally also be useable as a bootable startup drive, which is pretty darned convenient.
OS X’s Disk Utility—which enables you to format, partition, repair, and perform other kinds of maintenance on disks (including SSDs, flash drives, and disk images)—is good for what it does. Dec 21, 2017 The latest version of Disk Utility is 18.0 on Mac Informer. Iwork for mac lion download. It is a perfect match for CD & DVD Software in the System Tools category. The app is developed by Apple Inc. And its user rating is.
Disk Utility Restore
The restore function isn’t limited to creating clones of the startup drive. It can create a copy of any image or volume that can be mounted on your Mac. That makes the restore function extremely versatile, even if it’s largely overlooked in Disk Utility.
The restore function isn’t limited to creating clones of the startup drive. It can create a copy of any image or volume that can be mounted on your Mac. That makes the restore function extremely versatile, even if it’s largely overlooked in Disk Utility.
Disk Utility On Mac
(The newer version of Disk Utility has undergone a GUI overhaul.)Two Versions of Disk Utility
Disk Utility was at version 16.0 at the time of this writing, so there have certainly been more than two versions. But when it comes to the restore feature, Disk Utility hasn’t undergone many changes; the biggest was the redesign of the Disk Utility interface that came about with the release of OS X El Capitan.
Disk Utility was at version 16.0 at the time of this writing, so there have certainly been more than two versions. But when it comes to the restore feature, Disk Utility hasn’t undergone many changes; the biggest was the redesign of the Disk Utility interface that came about with the release of OS X El Capitan.
Because of that major change, we’re going to provide two sets of instructions for using Disk Utility’s Restore feature; one for OS X Yosemite and earlier, and one for OS X El Capitan and later.
What You Need
Restore will copy the source volume or image file to the destination volume, so you’ll need a disk that contains a volume large enough to hold the data from the source volume.
Restore will copy the source volume or image file to the destination volume, so you’ll need a disk that contains a volume large enough to hold the data from the source volume.
Both the source and destination volumes need to be mounted on your Mac. Restore will work with internal or external volumes.
If you’re planning on restoring from an image file you need to take the additional step of scanning the image file before the restore process. You’ll find instructions for preparing an image file near the end of this article.
Creating a Startup Clone
Using Disk Utility’s restore capabilities to make a clone of your startup drive has a limitation. Disk Utility uses a block copy method that provides for a faster copy, but it also needs to unmount all of the volumes involved in the restore process. Since the startup drive can’t be unmounted, you can’t make a clone of the startup drive directly.
(Booting from the Recovery HD volume allows you to create a clone of your startup drive.)Using Disk Utility’s restore capabilities to make a clone of your startup drive has a limitation. Disk Utility uses a block copy method that provides for a faster copy, but it also needs to unmount all of the volumes involved in the restore process. Since the startup drive can’t be unmounted, you can’t make a clone of the startup drive directly.
Instead, you need to either boot your Mac to another drive that contains the Mac OS, or use the Recovery HD volume to start up and run Disk Utility from. This may seem like an inconvenience, but it provides for both a fast copy and a safe one; since the source drive can be unmounted, no process can make changes to any files resident on the drive.
Let’s start the step-by-step instructions with the current version of Disk Utility.
Using Restore With OS X El Capitan and Later
Go ahead and launch Disk Utility; you’ll find it at /Applications/Utilities/, or if you booted from the Recovery HD volume, Disk Utility will be one of the choices in the Utilities window.
Go ahead and launch Disk Utility; you’ll find it at /Applications/Utilities/, or if you booted from the Recovery HD volume, Disk Utility will be one of the choices in the Utilities window.
In Disk Utility’s sidebar, select the destination volume you wish to have data copied to.
With the destination volume selected, click the Restore button in Disk Utility’s toolbar, or select Restore from the Edit menu.
A sheet will drop down, asking you to select the source volume. Use the dropdown menu next to the “Restore from:” text to select the source device, or use the Image button to select a disk image file.
(The dropdown sheet lets you select the source for the restore.)Warning: The selected destination volume will be erased by the next step. If you need any of the information on the destination drive, make sure you have a backup before proceeding.
Click the Restore button in the dropdown sheet.
The restore process will begin; if you wish, you can view the process by clicking the disclosure triangle next to the “Show Details” text.
When the copy process is complete, click the Done button.
Best mac os x apps. Copying using the restore function will also copy the volume title from the source to the destination, so you’ll now have two volumes with identical names. You may want to change the name of one of the volumes, to make it easier to tell them apart.
Using Restore With OS X Yosemite and Earlier
The earlier version of Disk Utility uses a slightly different user interface. Instead of selecting the destination first, as we did with the version in OS X El Capitan and later, we’re going to select the source volume first.
The earlier version of Disk Utility uses a slightly different user interface. Instead of selecting the destination first, as we did with the version in OS X El Capitan and later, we’re going to select the source volume first.
Launch Disk Utility, located in the /Applications/Utilities/ folder. If you’re booting from the Recovery HD volume, Disk Utility is listed in the OS X Utilities window, which opens automatically.
In the Disk Utility sidebar, select the volume you wish to use as the source. You can change this later if you select the wrong volume.
Click the Restore tab.
The volume you selected should be listed in the Source field. If you wish to change to a different source volume, select the desired source in the Disk Utility sidebar, or use the Image button to select a disk image file.
(Drag a volume to the destination field; once the green plus sign appears, you can drop the volume.)What Is Disk Utility On Mac
To select a destination, drag the desired volume from the sidebar to the Destination field. You can also drag a volume mounted on your Desktop to the Destination field.
Warning: The next step will completely erase the contents of the selected destination volume.
Click the Restore button.
A sheet will drop down, asking if you really want to completely erase the destination drive and replace its contents with the contents from the source drive. Click the Erase button to continue the restore process.
Dragon software for mac free trial. If requested, provide your administrator password, and then click OK.
The erase and restore process will begin; a status message and progress bar will appear near the bottom of the Disk Utility window.
When the restore is complete, the volumes will be remounted on your Desktop, and Disk Utility will remove the selected volume from the Destination field, leaving it empty.
The restore process also copies the source volume’s title to the destination volume; you may want to rename one or the other.
Restoring From an Image File (Any Version of Disk Utility)
Image files, those compressed .dmg files often used for distributing apps and data, can also be the source for the restore function. The process isn’t very different, except the image file needs to be prepared before it’s selected as the restore source.
(Preparing an image file for restoring can be done from within the Disk Utility app.)Image files, those compressed .dmg files often used for distributing apps and data, can also be the source for the restore function. The process isn’t very different, except the image file needs to be prepared before it’s selected as the restore source.
The process scans the image file, calculates the checksum, and reorders the files within the image.
In Disk Utility, select Images, Scan Image for Restore.
Browse to where the image is stored, then select the image file and click the Open button.
Provide an administrator password, if asked, and then click the OK button.
When the scan is complete, click the Done button.
At this point, the image file can be used as the source in Disk Utility’s restore process.
Image File Limitations
Scanning an image file has a few limitations that can prevent some .dmg files from being properly scanned. Generally, if the image file uses the compressed format it should sail through the scan process. Read/write formats and hybrid images tend to cause errors. If you need to, you can convert the image file format using the Convert command in the Disk Utility Image menu.
Scanning an image file has a few limitations that can prevent some .dmg files from being properly scanned. Generally, if the image file uses the compressed format it should sail through the scan process. Read/write formats and hybrid images tend to cause errors. If you need to, you can convert the image file format using the Convert command in the Disk Utility Image menu.
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Disk Utility User Guide
Disk Utility can fix certain disk problems—for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn’t work properly, or your computer won’t start up. Disk Utility can’t detect or repair all problems that a disk may have.
If you run First Aid on a disk, Disk Utility checks the partition maps on the disk and performs some additional checks, and then checks each volume. If you run First Aid on a volume, Disk Utility verifies all the contents of that volume only.
- In the Disk Utility app on your Mac, choose View > Show All Devices.Note: If you’re checking your startup disk or startup volume, restart your computer in macOS Recovery, select Disk Utility in the macOS Utilities window, then click Continue. If you check your startup volume (Macintosh HD), make sure you also check your data volume (Macintosh HD - Data).
- In the sidebar, select a disk or volume, then click the First Aid button .If Disk Utility tells you the disk is about to fail, back up your data and replace the disk—you can’t repair it. Otherwise, continue to the next step.
- Click Run, then click Continue.If Disk Utility reports that the disk appears to be OK or has been repaired, you’re done. You can click Show Details to see more information about the repairs. Otherwise, you may need to do one of the following.
- If Disk Utility reports “overlapped extent allocation” errors, two or more files occupy the same space on your disk, and at least one of them is likely to be corrupted. You need to check each file in the list of affected files. Most of the files in the list have aliases in a DamagedFiles folder at the top level of your disk.
- If you can replace a file or re-create it, delete it.
- If it contains information you need, open it and examine its data to make sure it hasn’t been corrupted.
- https://ameblo.jp/pragimesre1986/entry-12640724457.html. If Disk Utility can’t repair your disk, or you receive a report that the First Aid process failed, try to repair the disk or partition again. If that doesn’t work, back up as much of your data as possible, reformat the disk, reinstall macOS, then restore your backed-up data.
Nuke software free download mac. If your Mac has a Fusion Drive and you see a flashing question mark or alert, see the troubleshooting section of the Apple Support article About Fusion Drive, a storage option for some Mac computers.
If you continue to have problems with your disk or it can’t be repaired, it may be physically damaged and need to be replaced. 1mobile market apk free download for android. For information about servicing your Mac, see Find out how to service or repair your Mac.
See alsoErase and reformat a storage device in Disk Utility on MacAdd, delete, or erase APFS volumes in Disk Utility on MacPartition a physical disk in Disk Utility on Mac