Questions tagged [dmg-image]

*.dmg is a disk image file format widely used on Macintoshes for software distribution.

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.DMG File - corrupt image

I have a .DMG file containing a large amount of data that I am trying to restore. When trying to open the .dmg I receive a 'corrupt image' message. I have looked around at similar questions but am ...
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Netbeans Add Developer ID

how to add the developer Id before uploading the app to appleStore using netbeans? Output: Building DMG package for AppDemo Did not find a key matching 'Developer ID Application: '
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macOS: why won't .dmg files mount in /Users/me/Downloads

On macOS .dmg files refuse to mount inside /User/me/Downloads but mount without any issues in other directories. The error message is no mountable file systems. I'm on 10.14.5 macOS Mojave. I had ...
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.dmg “Corrupt Image” error

I have created a .dmg of my Pictures library via Disk Utility in Recovery Mode as an emergency back up last night, before erasing my Macintosh HD. I did the same this for Documents and iTunes, all in ...
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Trying to recover the contents of a DMG which fails to mount with “Corrupt Image”

So about a week ago I used the disk Utility to make a few images of some folders in my MacBook pro as a backup (1 small with docs, one about 15GB with miscellaneous stuff and 1 about 265 GB full of ...
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Linux: How to modify a .dmg file

I called file file.dmg and got the message zlib compressed data. I extract the dmg file with 7z: 7z x file.dmg and then I create a directory test mount the hfs file mount -t hfsplus -o loop 4....
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How would I convert a Windows .exe to a macOS executable/app?

I am trying to convert a Windows .exe file to a macOS .app or anything that would run on macOS. Problem is the only things I have found require a Mac and I don't have one. I am looking to convert it ...
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6k views

Unable to open DMG files - “Corrupt Image”

I created a DMG file using Disk utility in Recovery Mode (File -> New Image -> Image from Folder). I tried all the possible options from this question: extracting DMG using 7Zip - not working ...
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Creating a base image for macOS High Sierra with Apple File System (APFS)

I used to be able to create a single dmg file of a Mac disk drive (contains all partitions including recovery partition) and then deploy it to another Mac as per these instructions: https://support....
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Where does the content of an open encrypted image end up on Mac?

I have files stored in an encrypted image (DMG) on my Mac to keep them safe from snooping eyes, but a thing hit me: when I decrypt the image by opening it... where does the decrypted information end ...
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385 views

Corrupted Data In Recovered/Encrypted DMG File

This may be a conceptual issue, but I'm hoping someone may be able to point me in the right direction. I previously had an encrypted DMG file (exactly 500GB) that was created via Disk Utility with AES-...
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I need to create a macOs Yosimite boot device

In the process, I start by using Windows 10 DiskPart command to clean it and convert it to GPT ( Guid Partition Table ), therefore I use TransMac to restore it with The mac .dmg. mounting the ISO ...
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Installation of a program by using the terminal on MAC OS X

I have just started to work on a Mac terminal for a school work. My question is: which commands do I have to write to install a program (if I have the .dmg file) by using the terminal only?
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DMG Equivalent on Windows

I have a folder to distribute. On Mac, I can put all the folder's contents into a DMG, which the user can just click to open and see all the contents. What is the equivalent on Windows? Some have ...
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1k views

Create single disk image from drive with multiple partitions

I'm running Mac OS X 10.11.6. I have a variety of old CD-R's that contain multiple partitions (I would imagine this also applies to an HD). When I insert the disk, each partition mounts as a separate ...
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Create a DMG from my external hard drive for backup purpose

I would like to know how it is possible to create a DMG image from my external hard drive to copy it to another hard drive as a double backup. I was having a look around but didn't really came to the ...
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Install os x SL on MBP faileure

I have MacBook Pro mid-09, it had el capitan os before I removed it I wanted to work completely on win10, and completely formatted all the HDD with the recovery partition included But realised later ...
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Finding an old version of Git

I have just downloaded the .dmg file for the latest version of Git for my Mac with OS X 10.7.5. When I type: git --version I get: Illegal instruction: 4 This apparently means that my installation ...
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virtual dmg image keeps reloading and never goes away even after ejecting on OS X

I am on OS X 10.11.5 I've downloaded a demo software which came in a DMG file. I double clicked the DMG file and as expected it showed up on the desktop and in the Finder's side bar as a drive would. ...
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how to migrate virtual to physical disk

My plan is to migrate open virtual format(.vmdk,.raw,.dmg,.vdi) to physical partition. I tried to restore virtual file to USB using powerISO but didn't boot. I've .dmg and vmdk file, how to migrate ...
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Can't mount any dmg El Capitain

Help! I just started having an issue where I can't mount any DMG files on my Macbook Pro! I recently upgraded to El Capitain and everything seemed to be fine until today. Here's what I noticed, which ...
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Can I install OS X in VMware Workstation 12 from a dmg image?

I'd like to know if it's possible to mount OS X (10.10.x or 10.11) on a Virtual Machine under VMWare Workstation 12 Pro from the original dmg image? If it is possible: What is the process for ...
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How to extract a .dmg file in Linux?

As a Linux user, I need to get the content of a .dmg (Mac OSX disk image) file which contains an application installer. I tried dmg2dir (which requires dmg2img) which created an .img file but nothing ...
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475 views

AES Encrypt DMG for Windows?

I need to encrypt a dmg file with an AES key. On MAC we can do so on Disk Utilities but how to do it on Windows? I tried Mac Tools Lite but it has no such function. I also tried Google Search but I ...
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Make a custom yosemite install image on os x

I'm in charge of reinstalling os x on the computers of every new hire in our company. We're just starting to learn about the awesome things that you can do with OS X Server including NetInstall. I ...
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Homebrew Cask vs using dmg

Just wondering what the difference/advantage is between using Homebrew/Casks vs downloading the dmg file and moving the application onto the hard drive? I understand the original Homebrew is often ...
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Password Protected DMG Won't Mount After Yosemite Upgrade

I followed this guide to set up a password protected folder when I had Mavericks. After upgrading to Yosemite, the password protected DMG file will not mount. Double clicking the DMG opens a password ...
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225 views

Recover data from corrupted dmg

I had a simular problem as in the asked question (see link) Tools/tips to recover data from a corrupt DMG disk image? Really want to try nworkers solution to this problem but before I do something ...
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Can't change Icon of a DMG or air package in osx Mavericks

Hello I was hoping someone would be able to help. I'm attempting to make a fancy DMG for program I have developed for the company but keep coming up short when I try to change the icon when I view the ...
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Does Virtualbox support DMG files on non-Mac OSes?

I'm trying to use a DMG as disc drive for a VirtualBox virtual machine, and I'm greeted by this very unpleasant surprise : This reads : Error opening optical disc file C:\Users... Could not ...
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Retrieving data from Disk Utility Image

I created an image of my mac using disk utility. It's a .dmg. It has a lot of data on it (about 1 TB) and I only want one file from it. Is there any way I can selectively pull information from it, ...
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Can't unmount dmg. Keep getting “Resource Busy”

"Workspace" is an encrypted dmg where I keep my code. I don't usually unmout it but I need to take a backup and it's refusing to let me unmount: mark@mark-macbook-air /Volumes$ lsof | grep Workspace ...
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7k views

Not enough space in dmg file

I created a password protected dmg file (http://www.hongkiat.com/blog/encrypt-mac-folder/) but when I try to add content to the mounted dmg file I receive a 'not enough space' message. I have enough ...
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How to make a disk image file from a DVD on Windows that OSX can mount?

Question is pretty clear. Is there a software can do this or is there any other tricks? I tried making an iso file with MagicISO Maker but in OSX i got "no mountable file systems" error. Explanatory ...
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How can I find what type of encryption my DMG is using?

I have an encrypted DMG file on my Mac. Is there any way to use Terminal, and maybe the diskutil command to list what type of encryption the DMG is using? Or perhaps some other command? Or maybe there'...
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How to compress 2 (apple) disk images of different backups of the same drive?

So I have backed up my Macintosh HD at different instances to DMG files. I would like to compress them but when I try to make an archive it simply compresses each image, without recognizing the ...
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On a Mac that was originally shipped with Lion, how can I replace Mountain Lion with Lion?

My MacBook came with OS X Lion pre-installed. I then downloaded and installed Mountain Lion on the same partition for free, when it was launched. Now I need to install OS X Lion (10.7) in order to ...
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Is it possible to shrink DMG images?

I just did some data recovery on a failing hard drive. I have a 1.5 TiB DMG image of the hard drive. I don't have enough free space to simply copy the files elsewhere, and I would like to extract them ...
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Trying to restore a Mac OS X system from DMG file fails

I'm in a bit of a panic at the moment. My MacBOok was hanging and generally misbehaving so I decided it was time to do a clean install. I took 2 backups: Time Machine (happens anyway, but I ensured ...
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How can I recover data from a dmg that cannot mount?

I backed up a hard drive in a dmg, then reformatted the hard drive. (I had deleted the efi partition before which was preventing me from reinstalling the operation system). When I tried use the ...
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1answer
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Dmg to Iso on Win 7 64-bit

I was unable to run in cmd dmg2iso. It throws error that it can run only on 32-bit system and not 64-bit. Is there some free program that can do that on win 7 64-bit?
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Install mountain lion by using the .dmg from installer app

I already have a Mountain Lion Installer app, downloaded from Apple Store. Now, I would like to install ML on another machine I own. I didn't want to download it again, so I copied the .app to the ...
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Can't mount dmg image as read/write

Hello I've downloaded a bootable .iso image that I'd like to write to an USB stick under OSX (10.6). I've converted the image with the command hdiutil convert -format UDRW -o ./X15-65804.img ./X15-...
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Strange background image when opening DMG in Mountain Lion

Whenever I open a DMG file to install an application the window opens with a background image from another program I recently installed (Aptana Studio). Below is a screenshot in which I have opened ...
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Why is Adobe Flash Player downloaded as a “.dmg.mdlp” file?

When I download the current Adobe flash player installer from the Adobe website using Safari 6.0.1 under OSX 10.8.2, I end up with a file named 'install_flash_player_osx.dmg.mdlp' in my downloads ...
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How do you access the contents of a mounted DMG drive mounted through hdiutil and diskmout

My external USB drive failed. I made a .dmg image file of the drive using disk utility. Later I was not able to mount the .dmg image. I used terminal hdiutil attach -noverify -nomount name.dmg ...
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623 views

Suggestions? Password & Encrypted Read/Write File like a Mac (.dmg or .SparseBundle) also R/W on Windows, Ubuntu

For years I have used .dmg or .sparsebundle (Encrypted and Password Protected) to safely keep home directory backups on my Mac. Now, I am looking for a similar Full Permissions/Read/Write that ...
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What is the difference between ISO and DMG images?

What is the difference between .iso files and .dmg files? Why are they used differently?
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restore a DMG to a disk using ubuntu Live CD

I need to restore a drive from a backup I have on a DMG, but currently I can only boot the computer from a Ubuntu CD. Can I restore the backup to a drive this way?
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Make DMG Readonly

There is information on how to do the opposite (which is hard to impossible), but how do I make a writeable DMG readonly? The reason that I might want to do this -- because otherwise this question ...