DMG File Recovery Tool. SFWare Deleted File Recovery Program is one of the leading file recovery software which is basically designed to restore DMG file Mac whether it is lost, deleted and formatted on Mac OS X machines. It will easily recover DMG file Mac without damaging it. Some of the additional features of this toolkit are as follows. Jan 06, 2020  DMG file is an Apple image disk file which is used for purpose of installing programs on macOS. The functionalities of the file involve encryption, compression and file spanning etc. DMG files are mostly used for common downloading purpose over the Internet, but Mac OS X users can create images of their own disks.

One of the aspects where Macs differ from Windows PCs the most is when it comes to installing applications. On Macs, you need mount a disk image and then unmount it and delete once the installation is finished, which can be a bit of a hassle, especially if you have to test many apps in a short amount of time.

Thinking of that, this time we’ll share a couple of neat little workflows that you can implement on your Mac using Automator. With any of them, every time you are done with an app installation on your Mac, you’ll be able to eject/unmount and delete the disk image in just a couple of clicks.

Let’s get started with how to set up these nice Automator workflows.

Delete DMG Files Automatically When You Eject Them

Step 1: Open Automator and choose to create a new document. From the available document types that show up on the dialog box, select Service.

Step 2: At the top of the right panel, make sure to choose from the dropdown menus the options ‘no input’ and ‘Finder’ respectively so that the end result is as the one pictured below.

Step 3: Next, on the left panel of Automator, search for the Run AppleScript action and drag it to the right panel. An AppleScript window will show up with some placeholder code in it.

Delete that code and instead copy and paste the following one in the script box:

tell application 'Finder'
set selection_list to selection
if (count selection_list) < 1 then
display dialog ¬
'Please select a volume mounted from a disk image.' with title ¬
'No Selection Found' with icon stop ¬
buttons ['OK'] default button 1
return
end if
set my_selection to item 1 of selection_list
set my_kind to kind of my_selection
set my_name to name of my_selection
if my_kind is not 'Volume' then
display dialog ¬
'Please select a volume mounted from a disk image file.' with title ¬
'Selection is not a Disk Image' with icon stop ¬
buttons ['OK'] default button 1
return
end if
set volume_list to paragraphs of (do shell script 'hdiutil info | grep ^/dev/disk | grep -o '/Volumes/.*')
set source_list to paragraphs of (do shell script 'hdiutil info | grep ^image'-'alias | grep -o '/.*')
set match_found to false
repeat with v from 1 to (count volume_list)
if '/Volumes/' & my_name = item v of volume_list then
set match_found to true
exit repeat
end if
end repeat
if match_found is not equal to true then
display dialog ¬
'The selected volume does not appear to be a Disk Image.' with title ¬
'Could not find Disk Image' with icon stop ¬
buttons ['OK'] default button 1
return
else
set my_source to POSIX file (item v of source_list) as alias
move my_source to the trash
eject my_selection
--reveal my_source
end if
end tell

Step 4: Now save this Automator service and give it a name that is easy to remember.

Step 5: Once this is done, every time you have a disk image mounted, all you have to do is select it and on the Finder menu select Services and then Eject and Delete (or whatever you named the service you just created) and the disk image file will be both unmounted and deleted with one click.

Now, let’s take a look at another Automator workflow that achieves the same objective doing exactly the opposite.

Eject DMG Files Automatically When You Drag Them To the Trash

As you can see from the title, this Automator workflow allows you to achieve the same purpose, except that in reverse, so you can avoid this message every time you drag to the trash a mounted DMG file.

Here are the steps to create it.

Step 1: Create a new document in Automator and select Folder Action from the available document types.

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Step 2: At the top of the right panel, select Other… from the dropdown menu. Then, on the dialog box that pops over, type ~/.Trash to work with that folder.

Step 3: Next, on the left panel, drag the Run Shell Script action to the right panel. On the two dropdown menus that show up, select /usr/bin/python and as arguments respectively.

Step 4: Replace the placeholder script in the script box with the following one:

import string, os, sys
lines = os.popen('hdiutil info').readlines()
should_eject = False
for line in lines:
if line.startswith('image-alias'):
path = line.split(':')[1]
image_path = path.lstrip().rstrip()
if image_path in sys.argv:
should_eject = True
elif line.startswith('/dev/') and should_eject is True:
os.popen('hdiutil eject %s' % line.split()[0])
should_eject = False
elif line.startswith('###'):
should_eject = False

Once done, save the Folder Action and quit Automator. Now, whenever a DMG file is mounted, all you’ll have to do is drag it to the Trash and it will be unmounted at the same time.

Cool Tip: You can also create keyboard shortcuts for these actions by following the instructions at the end of this tutorial.

And there you go. Two different workflows to enable a very convenient feature on your Mac. Now all left to do is just choose which one you find more convenient. And the best of all? In both cases you’ll learn a bit more about Automator. Enjoy!

Also See#automation #OS X

Did You Know

In 1835, Thomas Davenport developed the first practical EV.

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Summary

DMG file disappears permanently on your Mac, and it seems impossible to get them back. EaseUS Data Recovery Wizard for Mac recovers deleted DMG files from macOS 10.14 - OS X 10.6 with simples clicks. Here is the guide for DMG file recovery.

How to Recover Deleted DMG Files on Mac

'Hi, I have accidentally deleted a couple of DMGs that I would like to get them back. I have dragged them to Trash and emptied the Trash. It seems impossible to restore the DMG files. What can I do to retrieve the lost DMG files?'

Apple Disk Images are files (usually with the .DMG extension) which the Mac OS X operating system uses to store disk images, with optional data compression and encryption. Such images can be mounted as volumes to access stored data directly from the operating system. DMG files are mostly used for software distribution over the Internet, but Mac OS X users can create images of their own disks.

While data loss happens every, DMG files are no exception. And sometimes data recovery from such images is required. This brief article explains how to use Mac data recovery software for this task.

EaseUS Data Recovery Wizard for Mac

This mac drive recovery tool completely scans the Mac hard drive to locate and recover DMG files that are deleted accidentally or due to any other reason. It enables you to recover deleted, lost, or formatted files with no effort at all. Three simple steps are enough to restore deleted data even from emptied the Trash. The earlier you use, the greater the chance is to recover. Other beneficial features of the DMG file recovery program:

01

Recoverable Files:

It can be applied to repair and restore photos, videos, music files, emails, documents, archived files, and more: 200+ file types are supported.

02

Supported Devices:

Recover files from Mac notebook, Mac desktop, hard drive, SSD, USB drive, memory card, SD card, CF card, digital camera, iPod, MP3/MP4 player, etc.

03

Support macOS:

Support the macOS and Mac OS X above 10.8.

04

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Recover deleted Mac data:

Recover deleted，formatted and other data loss situation.

Here's the step-by-step guide on how to recover deleted DMG file on Mac with the professional DMG recovery tool.

Step 1. Select the location where your important Word documents were lost and click Scan button.

Step 2. EaseUS Data Recovery Wizard for Mac will start immediately a quick scan as well as a deep scan on your selected disk volume. Meanwhile, the scanning results will be presented in the left pane.

Step 3. By Path and Type, you can quickly filter the Word files you've lost earlier. Select the target files and click Recover Now button to get them back at once.

How to Fix the Corrupted DMG Files

What if the DMG files are corrupted? How to fix them? Unfortunately, when the corruption happens there may be little you can do to reverse it. However, there are a few things you can try.

Step One: Back up

Before trying to fix a corrupt disk image, make a copy of it. While you may be able to fix a damaged image, it is also possible that these suggestions may further corrupt it, so be sure to work from a copy.

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Step Two: Use Disk Utility

Disk Utility has several routines you can use to try to clear the problem. Open the program and drag the disk image copy into the devices list. Then select it and in the 'First Aid' tab run a disk verification. If any problems are found, try repairing the image.

If the problem still exists, you can try resizing the image. For resizing, you might try the options for resizing just the partition, just the image, or both the image and partition since these will target different parts of the image structure.

Step Three: Mount the Images

Sometimes the problem is with the disk image mounter not being able to handle the image structure. You might try mounting the image when booted into Safe Mode (holding Shift at start-up). You can also try mounting the image in another operating system. Many times the utilities built to enable Mac compatibility in Linux and Windows use methods for mounting or converting a filesystem that may be more successful at getting a filesystem mounted than the ones Apple provides.

Conclusion

To avoid DMG or other Mac data loss, you should do the following things:

• Enable Time Machine Backup feature or data protection on Mac computer
• Never use RM Command or command terminal to delete a file
• Check selected files carefully before pressing Delete option