Open Dmg File Apple

  • Part 1: How to recover DMG files on Mac OSX
  • Part 2: How to repair DMG files on Mac OSX
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The software you download for your Mac in a DMG format can be opened like any other file on a Mac, and then the setup program can be run to install the software. Nov 30, 2012 Download and install a.dmg file from Mac OS terminal. I created a bash piece of code that downloads a.dmg, mounts it and copies folder into your /Applications folder. First of all, download the DMG extractor program file from the internet and install it in your personal Windows PC. Run the application with admin rights and in the main UI of the tool's screen, click on 'open' button in the upper menu bar to browse the required DMG file. The file will be loaded into the software's screen. According to the website HFSExplorer can open and read encrypted dmg images. HFSExplorer is an application that can read Mac-formatted hard disks and disk images. It can read the file systems HFS (Mac OS Standard), HFS+ (Mac OS Extended) and HFSX (Mac OS Extended with case sensitive file names).

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DMG or Apple Disk Images are used for software distribution over the Internet. It is useful to store disk images with optional data compression and encryption. How to recover DMG files on Mac OSX deleted by mistake? Similar to recover images or other file formats, you only need to choose a DMG file recovery to get back the file with ease.

What is the best DMG file recovery to retrieve lost or damaged Apple disk images? When you get back the deleted DMG files, you might not able to open the files. Is there a way to repair the DMG files with ease? Just learn more about the information from the article now.

Guide List

1. How to recover DMG files on Mac OSX

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  1. Retrieve DMG, RAR, ZIP, SIT and other useful compressed files on Mac.
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  3. Provide both Quick Scan and Deep Scan modes to retrieve files with ease.
  4. Keep the original data on your Mac privately without storing or modifying.
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Step 1Download and install DMG file recovery on Mac. Launch the program on your computer and choose the Mac Data Recovery option. If you need to recover a DMG from external hard drive, you can connect the device to Mac beforehand.

Step 2Choose the Document and Others option in order to retrieve DMG files on Mac OSX. After that you can select the desired hard drive or external devices. If you want to get the DMG files within a short period, you can enter the path for the deleted file

Step 3Click the Scan button to quick scan the deleted DMG files from the desired hard drive or device. After the scanning process, you can preview the files within the program. Simply search for DMG to locate the desired file from all scanned files.

Step 4If you are satisfied with the result, you can click the Recover button to retrieve DMG file on Mac OSX. Now you can double click the DMG files to extract the files accordingly. Just make sure there is enough space for the output DMG. Alternatives to flash player for mac.

Note: Besides the Quick Scan mode, you still have another chance to retrieve more files with Deep Scan mode. It takes a period of time to retrieve all the files on Mac. Just have another try if you cannot get the desired DMG file.

2. How to repair DMG files on Mac OSX

What should you do if you find the DMG files are corrupted or damaged? Even if you retrieve deleted DMG files to Mac, you still cannot open the DMG files on Mac. Here is the detailed process you should know to repair or reverse DMG files back on Mac.

Step 1Just have another copy of the DMG files before repairing. As for the case, even if you cannot retrieve the data from DMG files on Mac, you still have another chance to get back the files.

Open Dmg File In Vista

Step 2Launch Disk Utility and choose the DMG files from the left menu. Click the First Aid option to have disk verification. It will repair and recover DMG files on Mac OSX.

Step 3If the problem is related to the image structure, you can mount the image when booted into Safe Mode. Of course, try mounting the image in another operation system is also allowed.

Note: If the problem still exists, you can also try to resize the image. You can resize both image and partition since these will target different parts of the image structure.


The article shares the ultimate solution to recover DMG files on Mac, or even repair the damaged or corrupted DMG files. Just follow up the instruction and get the desired files from Mac with ease. In order to protect the DMG files, it is recommended to turn on the Time Machine to backup the files or even upload the files to cloud service instead.

In addition to the above situation, if you also encounter recover files problems after reinstalling Mac OS X, you can refer to this article: Possible way to recover files after reinstalling Mac OS X.

If you have any other query about how to recover DMG files on Mac OSX, you can feel free to leave comments in the article.

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So you’re running Linux on your computer, maybe Ubuntu, and you have some files with the .dmg extension. In this guide, we’re going to talk about how to open, mount, extract, and otherwise get your files from these pesky DMG images. You could always just extract the files on a Mac, then transfer them back to your Linux machine. But if you really want to do this on Linux, without having to rely on Mac, here’s how to do it.

What are DMG image files?

Open Dmg File Apple

Simply put, it’s a kind of image file. But not an image like a jpeg is an image. DMG is Apple’s proprietary disk image format, native to Mac OS X. There are actually a whole bunch of different types, format and options within this format. There are options for encryption, compression, and different kinds of partition schemes, among others. Unfortunately, this can make things pretty confusing when we’re trying to gain access to the data contained in one of these images.

DMG images are typically a kind of Universal Disk Image Format (UDIF), although there are others, namely NDIF and SPARSE. Although the .dmg file extension is usually used, they can also sometimes have an .img extension, or in some cases no extension at all. Their MIME type is application/x-apple-diskimage.

The HFS/HFS+ (Mac OS Extended/Journaled) file system is typically used in DMGs. However, this isn’t always the case. You may also sometimes find FAT and ExFAT files systems, as well as variations on HFS.

Does my system support DMG?

Perhaps the biggest hurdle to overcome when trying to work with DMG files is working with the HFS file system (Mac OS Extended). Linux supports HFS through the “hfs” and “hfsplus” kernel modules.

There’s an easy way to test if your system has these kernel modules. Plug in a USB drive formatted with the Mac OS Extended file system. If your particular distribution doesn’t have the appropriate modules, you will likely get an error message. On Ubuntu, you’ll get a popup window declaring “Ubuntu: Unable to mount '.

Alternatively, we can see if the kernel module files are present with find:

We want to see two files: “hfs.ko” and “hfsplus.ko”. If find doesn’t return these files, your system probably doesn’t support HFS.

You could also try “modinfo”: modinfo hfs and modinfo hfsplus should return something like:

If you get 'modinfo: ERROR: Module hfsplus not found' your system doesn’t have these modules.

Not all Linux kernels and distributions support HFS. This is especially the case for certain distributions that are a few years old. If you have kernel support for HFS, great! If not, don’t worry. There are still ways to extract data from your DMG files. While it’s nice to have the option to mount the images we’re working with, this is really the only functionality we’re losing without having the hfs and hfsplus modules. The two programs we’re going to use later on (P7ZIP and dmg2img) do not require kernel support to function.

What kinds of DMG images can be opened in Linux?

This guide is about how to open, mount, and extract files from read/write, read only, and compressed DMG image files. The following partition schemes have all been tested with the techniques discussed here.

  • Apple Partition Map
  • CD/DVD (partitioned)
  • CD/DVD (partitioned) with ISO data
  • Hard disk
  • Master Boot Record Partition Map
  • No partition map

This guide does not cover how to handle sparse disk images (.sparseimage), sparse bundle disk images (.sparsebundle), or CD/DVD masters. DMG images with partition scheme types of “CD/DVD” and “GUID Partition Map” do not appear to work with the techniques described here.

Option 1: Mount the DMG


If the Linux distribution you’re on has HFS support in the kernel (Ubuntu 14.04.1 LTS supports it), it’s pretty easy to just mount the DMG image:

We’re using “sudo” because we need root privileges to mount things. The HFS+ file system type is specified with “-t hfsplus”. The “/mnt” at the end of the command specifies where we’re mounting the image.

Open Dmg File Apple

Unmount the image with sudo umount /mnt

If you get a wrong fs type message like the one below, it means the DMG file is either of an unsupported type, or it’s compressed. Unsupported images include sparse images, sparse disk bundles, CD/DVD masters, and images with partition schemes of the CD/DVD or GUID Partition Map types.

Use “file” to learn a little more about the image file:

If you get image.dmg: x86boot sector that means it’s probably using a GUID Partition Map and isn’t supported. This isn’t good, however, it’s also not too terribly common.

What’s more common is to see something like this:

If mounting isn’t working, and this is what you’re seeing with “file image.dmg”, then you’re luck!. Our problems are being caused by compression. Linux doesn’t like to mount compressed DMG images. To get around this little obstacle, we’ll use dmg2img (see below).

Option 2: Use dmg2img for compressed images

So you have a DMG image that you can’t mount because it’s compressed. You’ve done “file compressed_image.dmg” and you got “compressed_image.dmg: bzip2 compressed data”. The fix? That’s easy: use dmg2img to convert it to an uncompressed image. Once you run the image through dmg2img you should be able to mount it no problem.

Don’t have dmg2img? It’s usually pretty easy to get using your distribution’s package management. On Ubuntu, you’d do:

Using dmg2img isn’t very difficult. Type “dmg2img” into the command line followed by the name of the DMG file you want to decompress. The Mac OS X version of Firefox is a good example of a compressed DMG file.

Now mount the resulting .img file:

Option 3: Extract DMG contents with P7ZIP

P7ZIP is awesome. It’s the Linux/BSD version of 7-Zip. Check out their SourceForge page here With it you can literally extract files from any kind of image or archive. Just kidding… It doesn’t really work with every format conceivable. However, it can handle (in alphabetical order): ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z. Impressed? I certainly am!

Installing p7zip is pretty easy using your distribution’s package management system. On Ubuntu with apt-get:


In addition to being able to extract data from compressed and uncompressed images alike, P7ZIP doesn’t require the HFS kernel modules at all. In the example below, we’re going to extract all of the files from “Firefox 33.1.1.dmg”. When we’re done, we’ll have a tidy little folder called “Firefox”.

Dmg Files Pc

Invoke P7ZIP to extract archives and images with “7z x”.

Notice that 7z extracted three files: “0.ddm”, “1.Apple_partition_map”, and “2.hfs”. To actually get to the files, we’ll need to run 7z again on “2.hfs”.

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We picked “2.hfs” because it was the biggest of the three, meaning it was probably the one with the data. Simple but effective logic. After a few moments, you should have a folder called “Firefox” with all of the files from the original DMG.