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Jul 26, 2016 If you’re running macOS Sierra, see how to add your Desktop files and Documents to iCloud Drive automatically. Important: Be sure to either copy the entire folders over or create new clearly. Oct 30, 2019 When the backup is finished, you can find the date and time of the last backup in the General tab, just above the Manage Backups button. How to Encrypt an iOS Device Backup in macOS. Nov 15, 2016 Back Up Your Mac’s Primary Hard Drive. Start up Super Duper and you’ll see an extremely simple window. Select your system drive in the “Copy” dropdown, and your external drive after “to.” Leave the “using” dialogue set to “Backup – all files,”; the other options won’t create a bootable drive with all your files. FileFort is a simple software to backup MAC. You can choose which files or folders are to be backed and which files or folders are to be excluded from backup. Here you can do a full backup, historical backup, or incremental backup.If required, it can be used to create BKZ files, create self-extracting app files, create ZIP files, mirror files in subfolder, or encrypt using MEO encryption.
Summary: In this blog, we will share two methods to create a disk image-the first one using macOS Catalina’s Disk Utility and the second using a Mac data recovery application.
Read on to know the steps and benefits of these methods. Also, make sure you avail the free trial version of Stellar Data Recovery application.
Read on to know the steps and benefits of these methods. Also, make sure you avail the free trial version of Stellar Data Recovery application.
Create Backup For Macbook Pro
Disk image of an external or an inbuilt Mac storage drive is immensely helpful in recovering files in case the source drive fails or dies. You can create a disk image of your APFS or HFS drive on a larger storage medium and access it at a later point of time.
Create a Disk Image Using Disk Utility on macOS Catalina
macOS Catalina’s inbuilt Disk Utility provides an option to select a mounted storage drive be it internal or external SSD/HDD and create a disk image (.DMG) file to a location other than the source disk. The systematic steps to create a disk image of a drive using Disk Utility are as follows:
- Open DiskUtility and select the storage drive from the sidebar
- Go to File > New Image > Image from “DriveName”
- Give a name to your disk image file and provide a destination to save the file
- Click the Format popup menu, then choose your required option
- If you want to limit the access of this disk image file, then click the Encryption popup menu to set a password for its access
- Click Save to continue the imaging process
- Click Done once the imaging process is over
Disk Utility mounts the image file’s disk icon on the desktop and sidebar of Finder. You can use the mounted image file to open its content.
Create a Disk Image Using a Mac Data Recovery Utility on macOS Catalina
The third-party data recovery utility, Stellar Data Recovery Professional for Mac also allows you to create a disk image (.DMG) file of the inbuilt Mac storage drive/volume or an external storage device. The logical steps to create a disk image of a drive using the utility are as follows:
Step 1)Download and install Stellar Data Recovery Professional on your Mac with installed macOS Catalina (or later macOS/OSX)
Step 2) Launch the software and select RecoverData from the main interface
Step 3) Click the ‘2nd‘ icon present at the top of the interface and select CreateImage
Step 4) From the “CreateImage” screen, select a drive or a volume to create an image file
Step 5) If you wish to create an image of the entire selected storage location, click Next
Step 6) If you wish to select the range to create an image, click the AdvancedSettings
- From the “SelectRangetoCreateImage” screen, drag the sliders to define the starting and ending sectors of the image file
- Click Close and then click Next
Step 7) In the “CreatingMediaImagetoSave” dialog box, locate the destination where you wish to save the image file
Step 8) In the “SaveAs” text box, type the disk image name and then click Save
This completes the disk imaging process using the software. Lacie d2 quadra support for mac os mojave. Unlike Disk Utility, macOS Catalina does not mount this image file for you to access its data. Nevertheless, you can keep this newly created disk image as a backup and use it to recover data at the time of data loss.
Recover Data from a Disk Image Using the Software
The methodical steps to use the .DMG file for data recovery are as follows:
Step 1) Launch the software and select Recover Data from the main interface
Step 2) Click the ‘2nd’ icon present at the top of the interface and select Load Image
Step 3) From the “Load Image” screen, select the .DMG file or else click Add to add the image file
Step 4) Click Scan to start the recovery process Dynamic clock wallpaper for mac os mojave.
Step 5) Once the scan is over, preview and select the required files then click Recover
Step 6) Specify the save location and click Save. You can find the recovered data in the saved location. Watch the below video for the process.
Conclusion
We hope the blog helped you in understanding the practical details of how you can create a disk image file of a storage drive on macOS Catalina. By implementing Disk Utility, you can generate a disk image file and can open the automatically mounted image file from the saved location. On the contrary, by using Stellar Data Recovery Professional for Mac, you create a disk image file and use it to scan and recover lost, deleted, or inaccessible files.
Unlike Disk Utility, the software allows you to select the specific region of the drive for image creation. We recommend this method to recover files from a storage drive that is too big in size. For instance, if your storage drive has the data storage capacity of say 8 TB, then you need to recover data in portions. Free download the software to create an image, scan, and preview files. Register the software to save the recoverable files.
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Snapshots are a feature of APFS (Apple File System) that has been part of the macOS since High Sierra. A snapshot captures the state of an APFS formatted drive, and preserves all the files on the drive, as they appeared when the snapshot was taken. If you ever need to, you can roll back the drive to its previous state.
Apple makes use of the snapshot feature whenever a system update is performed. Before the system update is applied, a snapshot is taken of the startup drive, ensuring that if something goes wrong with the update process, you could recover from the problem quickly and be back right where you were before you started the system update.
In this Rocket Yard guide, we’re going to take a look at APFS snapshots, how they’re created, managed, and deleted, as well as the advantages and disadvantages of snapshots.
Snapshots Take Up No Space, But Can Magnify the Amount of Data Blocks Used
When a snapshot is initially created, it takes up no additional space on the volume. A snapshot essentially marks all the currently used data blocks on a volume to be preserved; that is, no changes can be made to them. At the moment a snapshot is taken, there’s no increase in the space used on a volume.
Note: Apple has supported local snapshots on HFS+ formatted drives since OS X Lion. APFS-based snapshots use an entirely different mechanism even though Apple has continued to use the “local snapshot” nomenclature for both types of file system snapshots. In this guide, we’re specifically dealing with the APFS snapshots.
Snapshots leverage the APFS’s copy-on-write system. When there’s a need to write data, such as when you’re editing a file, a new data block is used to hold the changes you’re making, instead of writing the data back to the original block.
Normally the old data block can then be marked as free and available for use. However, if the block is marked as preserved, such as when a snapshot has been generated, the old block remains and is not freed up for use.
Editing a file can significantly magnify the amount of space being used, as the old versions of the file are retained in the snapshot, while outright deleting a file frees up no space at all since the snapshot will retain all the preserved data.
Creating a Snapshot and Rolling Back a Snapshot is Fast
A big advantage to snapshots is how quickly they can be created. Only the volume’s metadata is being copied, so the process is lightning-fast, especially when compared against conventional backups. Rolling back to a snapshot is also quick; just the metadata needs to be restored since all the actual information in a snapshot data block was never changed.
Deleting a Snapshot is Difficult
Unwinding a snapshot can be a difficult process, as the system needs to go through each data block and remove the preserved setting, decide if the data block still contains active information, and free up the data blocks that aren’t currently in use where it can.
Snapshots Are Not Backups
On the surface, it looks like snapshots perform the same function as a backup, but have the added advantage of being quick and easy to create, as well as providing the ability to use a snapshot to recover from a problem quickly.
Seems pretty good, but snapshots have a few downsides. First up, snapshots are part of the startup drive. They don’t exist anywhere but on the same startup drive as the data you’re trying to protect. That makes snapshots vulnerable to any issues the volume may encounter. Accidently erase the startup drive and the snapshot is gone as well. Drive having some type of errors? The snapshot is likely experiencing the same problem. The point being, don’t rely on snapshots as a backup. You still need a dedicated backup that keeps data stored on a physically separate device. Prices, terms, and availability subject to change without notice. Not responsible for typographical, technical, or descriptive errors of products herein.
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Creating Snapshots
APFS snapshots are only supported on drives using the APFS format. If you’re using any other file system, such as HFS+, APFS snapshots will not be available. If you’re using a drive with APFS, you have a few options available for creating and managing snapshots.
Time Machine:Time Machine gained support for APFS snapshots with macOS High Sierra. Some sharp-eyed Time Machine users may have noticed an addition to the description of the types of data Time Machine keeps. When you open the Time Machine preference pane, you’ll see “Local snapshots as space permits” is now part of the description of what Time Machine does.
Time Machine will use APFS snapshots of your startup drive provided it’s APFS formatted, isn’t in Time Machine’s list of excluded items, and there’s a significant amount of free space available.
Time Machine performs the following snapshot management functions:
- Creates a snapshot of the startup volume approximately every hour, and keeps it for twenty-four hours before it is automatically removed.
- Creates a snapshot of the last successful Time Machine backup, and keeps it unless space is needed.
- Creates a snapshot before installing any macOS update.
tmutil: tmutil is a command line tool for controlling Time Machine. It offers a number of actions for creating and managing APFS snapshots. The Terminal app is used with the tmutil commands.
You can find information about using Terminal in the guide:
Tech 101: Introduction to the Mac’s Terminal App, Part One
How to create an APFS snapshot:
Open Terminal and enter the following at the prompt:
tmutil localsnapshot
Press enter or return.
A new snapshot will be created with the current date and time appended to its name.
How to list existing APFS snapshots:
Enter the following at the Terminal prompt:
tmutil listlocalsnapshots /
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Press enter or return.
Terminal will list the snapshots stored on the startup drive. You can specify a different drive by replacing the “/” in the command with the full pathname to another drive.
How to delete an APFS snapshot:
To delete a specific snapshot, you need to know the creation date of the snapshot you wish to delete. The easiest way to find the date is to use the listlocalsnapshots command above. It will list each snapshot by name, which includes the data and time appended to the name.
As an example, if I list local snapshots on my Mac in Terminal I get:
tnelson@Toms-Mac ~ % tmutil listlocalsnapshots /
Snapshots for volume group containing disk /:
com.apple.TimeMachine.2019-12-06-152818.local
com.apple.TimeMachine.2019-12-07-171533.local
The portion of the name after TimeMachine. and before .local are the date and time. If I wanted to delete the snapshot named com.apple.TimeMachine.2019-12-06-152818.local, I would enter the following Terminal command:
tmutil deletelocalsnapshots 2019-12-06-152818
Press enter or return.
Mounting a Snapshot
It’s possible to mount a snapshot on your Mac’s desktop and use the Finder to restore an older file from the snapshot. There doesn’t seem to be any advantage to doing this versus just using the normal Time Machine interface to find and restore a file, however, it may be interesting to see all the files in a snapshot.
In order to mount the snapshot, you need to create a directory that will be used as the snapshot’s mount point. I suggest using the /private/tmp folder to create a directory named snappy so the mount point will be removed automatically when you log out of your Mac.
At the Terminal prompt, enter the following:
mkdir /private/tmp/snappy
https://potentdecor.weebly.com/ftp-software-for-mac-yosemite.html. Press enter or return.
To mount a snapshot, you need to know the snapshot’s name, which you can find out using the listlocalsnapshots command outlined above. Once you have the name, you’re ready to mount the snapshot. In this example, I will mount my snapshot named com.apple.TimeMachine.2019-12-07-171533.local.
At the Terminal prompt, I would enter:
mount_apfs -s com.apple.TimeMachine.2019-12-07-171533.local / /private/tmp/snappy
and then press enter or return.
The snapshot will be mounted on the desktop.
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With the snapshot mounted on the desktop, you can use the Finder to browse through the snapshot’s information. You can copy files from the snapshot, but you cannot move, delete, or add to the snapshot.
After examining the snapshot, you can remove it from the desktop by ejecting it (right-click on the mounted snapshot and select Eject from the popup menu).
Restoring a Full Snapshot
If you need to roll back your Mac to the state it was in when a snapshot was taken, such as after a software upgrade that went bad, you can do so by booting into the Recovery environment and using the instructions from the Rocket Yard guide:
How to Restore Data From Time Machine Backups
Use the instructions in the “Restoring a Full Time Machine Backup” section. When you get to the step for selecting a Restore Source, be sure and select the startup drive that holds the local snapshots, and not your Time Machine drive.
After that, just follow the onscreen instructions to restore from a selected snapshot.
Warning: All information added after the selected snapshot’s date will be lost when the snapshot is restored.
Snapshots and You
APFS snapshots are a relatively new tool that can be used as part of an effective backup and recovery strategy. Time Machine users have an advantage with the Time Machine app able to manage snapshot creation and deletion for them.
It may be tempting to keep a number of snapshots around to allow you to recover to various points in time. But snapshots should be kept to a minimum so they do not excessively impact your storage usage. Instead, use Time Machine or another favorite backup app for the bulk of your backup needs, and just be aware that snapshots are a recovery option should something go wrong when you install new versions of the macOS.
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Have you been working with APFS snapshots? Let us know in the comments below.
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