Questions tagged [dmg]

Apple Disk iMaGe file format

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1 answer
21 views

Why does open fail with LSOpenURLsWithRole() failed with error -610

Why am I getting LSOpenURLsWithRole() failed with error -610 when I try to open a .dmg on the command line? user@host Downloads % open buskill-mac-x86_64.dmg LSOpenURLsWithRole() failed with error -...
3 votes
2 answers
85 views

Cannot install old MacOS from App Store for running 32 bit apps

I want to install an older macOS version in a virtual machine (using Parallels) to run old 32 bit apps. I try to download using this page: https://support.apple.com/en-gb/HT211683 I tried to download ...
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2 votes
1 answer
136 views

Safari can’t open the file “.dmg” because no available application can open it

macOS Monterey 12.5, MacBook Air, M1, 2020 I am pretty sure I was learning how to partition my disk to install Linux and I may have done something with diskutil like unmounting my primary disk. I have ...
1 vote
0 answers
48 views

Remove known password from DMG file

I have a few .dmg files of which I know the password. I am easily able to mount them and view the contents. Is there any way to remove the password from the files? From what I see hdiutil chpass is ...
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How could macOS installer act as both an installer package "InstallAssistant.pkg" and a disk image "SharedSupport.dmg"?

Apple has been providing single file macOS installer package "InstallAssistant.pkg" since Big Sur, this package install the app to "/Applications/Install macOS Ventura.app", and ...
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Encrypted file image access

I have 3 users on a mac os computer: Administrator user A: Standard Account user B: Standard Account User A should not see User B files. And User B should not see User A files. User A has an ...
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3 votes
1 answer
1k views

How can I use Windows to create an OS X Yosemite USB flash drive installer from the disk image (.dmg) file downloaded from Apple?

There are many posts on the Internet where instructions are given for creating OS X USB installers by using the TransMac and other such applications on a Windows machine. Many of these posts assume ...
5 votes
2 answers
4k views

How can I use Windows to create an OS X El Capitan USB flash drive installer from the disk image (.dmg) file downloaded from Apple?

There are many posts on the Internet where instructions are given for creating OS X USB installers by using the TransMac and other such applications on a Windows machine. Many of these posts assume ...
1 vote
1 answer
246 views

Error hdiutil: create failed - File exists -> but the file does not exist until this command fails

Trying to create a .dmg file on an NFS share. % rm -f store.dmg && ls -l store.dmg ls: store.dmg: No such file or directory % hdiutil create -size 300g -fs APFS -volname Temp store....
8 votes
1 answer
2k views

All of a sudden can't open .dmg files on Monterey

My MacBook Pro 13" M1 crashed last night, I think because I switched off my external USB-C monitor. I logged in as normal but since then I am not able to open .dmg files. When I try to open using ...
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8 votes
1 answer
773 views

Auto-Launch app from the dmg

Is there a way, as soon as a .dmg is mounted, without any user-action the contained .app launches, just like windows has autorun.ini?
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0 answers
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"corrupted" DMG image on download but works fine from storage app like Box

I'm cutting my teeth on writing software, widgets and the like, and have successfully created an app in python, packaged it in pyinstaller, and then created a .dmg through the brew install create-dmg ...
2 votes
1 answer
892 views

Is there a way to create a Background image for DMG so that the image will fit any screen?

I'm opening a DMG on a M1 MacBookPro 13" screen (2560x1600) and the background image, which is 740x494, is not fully displayed. Is there a rule of thumb type solution for making sure that when a ...
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0 votes
1 answer
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Shrink disk image to eliminate free space

I created a larger-than-necessary writable disk image, copied content to it, then shrunk the partition with diskutil resizeVolume. This left a big gap at the end of the partition table: MEDIA: "&...
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Why is encrypted volume asking for password on first run only?

MacBook Pro running macOS Catalina. I have a “QuitAllApps.app” automation that quits all open apps, including an encrypted .DMG volume that is opened with different automation. After working great for ...
2 votes
1 answer
1k views

Using hdiutil to create a blank .dmg image in the current directory

As a workaround to this issue, I want to use the hdiutil to create a blank image in the current directory. The settings should be identical to these of the GUI Disk Utility (File > New Image > ...
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1 answer
308 views

Open an Encrypted Folder In Another Mac

I encrypted a folder in a MacBook Pro running Big Sur following this article: https://www.hongkiat.com/blog/encrypt-mac-folder/ Am I able to copy this .dmg file to another Mac and open it with the ...
0 votes
0 answers
31 views

macOS Catalina Retain Path Bar in Mounted Folders

I'm running macOS Catalina, and whenever I download a *.dmg and open it, Finder doesn't show a path bar at the bottom. In older versions of OS X it used to be that the first time I pressed View -> ...
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118 views

Show password of mounted DMG file

I recently created 3 encrypted DMG files using the same password for all of them. Apparently I do not correctly remember the password anymore but one of the DMG files is still mounted. Is it possible ...
1 vote
1 answer
323 views

How to skip verification of .dmg file located on a network filesystem?

I have a file server (SMB/Samba 4.5.16) in the local network. If I put a .dmg file on it (anywhere) and try to mount it, MacOs will ALWAYS verify it first, which means reading through the whole thing, ...
1 vote
1 answer
150 views

Opening a DMG file and switching to it automatically

When I click on a DMG file, finder opens and mounts it. Then I have to search for the new "disk" and select it. Is there a way to open a DMG file and make finder select and show it ...
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Recover data from DMG image of external drive

I have a DMG file which was created for an external APFS drive using Disk Utility. The DMG file is 250GB. The output from Disk Utility when the DMG was created Reading GPT Partition Data (Primary GPT ...
0 votes
1 answer
219 views

Google Drive macOS client can't dowload files inside mounted dmg virtual drive

I'm trying to let Google Drive client to sync files inside mounted dmg. I've added the folder (mounted dmg) to Google Drive client for backup. Everything works fine: upload of new files from my ...
1 vote
0 answers
24 views

Is there any way to create a disk image where its Finder window will not display the status bar or tab bar?

I'm trying to create a disk image for distributing an application, where it automatically opens a Finder window in icon view with a custom background. (The sort we see used for many applications.) ...
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2 votes
2 answers
536 views

Making an ISO file from an Apple provided DMG file? [duplicate]

I'd like to make a bootable ISO file from Apple-provided DMG file located under Download macOS using Safari on your Mac from: https://support.apple.com/en-us/HT211683. They provide a DMG file with a ...
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1 vote
0 answers
28 views

Trying to restore older Macbook Pro 13 and 15in

Ok so im running out of ideas. i have two macbooks that im trying to restore. They both predate internet recovery and the hard drives were replaced. I do not have any disks for them so im trying to ...
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0 votes
1 answer
75 views

Launch DMG drive script failing after restart

I have an automation (screenshots of it here: https://www.icloud.com/iclouddrive/0bB-1AiIWdJc1jmkfdjRbsAVA#Launch_Plex_Media_Automation_ )saved as an app in Automator with the following AppleScripts ...
0 votes
1 answer
489 views

Google Chrome dmg wont eject after installation, even though it's not in use

I just bought a MacBook Air M1 (it's my first MacBook so im pretty new to the OS). I downloaded and installed Google chrome, however I'm trying to delete the dmg file but when I click eject or try to ...
2 votes
1 answer
2k views

Is running an app directly after opening .dmg file without installation safer than installing it?

For macos apps downloaded from the Internet, I am kinda paranoid and don't trust most of apps for security reasons, especially I am living in a country which does censorship too much. I think there ...
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1 vote
1 answer
100 views

Recognize encryption from UDIF

I have created a savings bundle and encrypted it with the standard SHA 2 algorithm with the usual hard disk utility. Can I see the encryption anywhere? They cannot be found in the disk utility or with ...
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1 vote
1 answer
291 views

burning a multi-session cd into iso

I have a multi-session (osx/windows) cd that I'd like to create an iso from. Is there a way to create a single iso file with all the sessions included in it? Output from diskutil list disk2 is below. ...
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2 votes
1 answer
534 views

Where is the DMG saved when the hard disk is erased?

Assuming you would go into recovery and format the data carrier on which macOS is installed, where would the DMG be located from which you booted with "CMD + R", because as far as I know it ...
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0 votes
2 answers
1k views

MacOS Big Sur - how do I disable/ skip verify on opening dmg [duplicate]

I have 2015 MBA running Catalina that at some stage in the past I managed to configure that when opening my own created dmg files (used for business data storage with encryption security) it no longer ...
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1 vote
0 answers
59 views

macOS recovery signing and checksums

A question that has occupied me for a long time and I still haven't got the answer. It's about Apple's Internet Recovery. When I read through quite a few pages from Apple, I saw that a signed .dmg was ...
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1 answer
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I only see a .pkg file when restoring from DMG in TransMac. What is wrong?

I finally got my hands on a second-hand MacBook Pro (Early 2011). However, the disk is corrupted and doesn't boot, and Internet Recovery proves ineffective as the OS X Lion Setup fails. This is the ...
0 votes
1 answer
341 views

hdiutil convert -format UDRW not truly editable

Trying to add a single file to an existing ISO I ran into a bit of hiccup I can't see through. Here it is: Having never done it before but encouraged by reading the advice from this question: Add/...
2 votes
2 answers
1k views

How to tell if dmg file contains universal binaries, i.e. if it has been compiled for arm64 hardware

Can you tell from a .dmg file if it contains arm64 binaries? I've got a Mac mini M1 running Big Sur. I don't want to run apps under Intel, only arm64. I don't even have Rosetta installed, and want to ...
1 vote
0 answers
59 views

How to find and download a specific macOS update name that usually is not available within the apple download website

Every time Apple release a minor macOS X update, for example (Supplemental, or Combo, or Security Update, etc), I usually visit https://support.apple.com/en_US/downloads and I download the dmg file ...
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0 votes
0 answers
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How do I create a Mac OS install hard drive from InstallESD.dmg

I have the InstallESD.dmg file for Mac OS El Capitain, and external Hard Drive with more than 200 GB. I have no idea how to burn the InstallESD.dmg into the hard drive because I tried to burn it but ...
3 votes
1 answer
1k views

How to create "Drag to Applications Folder" in dmg?

I wrote a piece of software and I host it online as a downloadable dmg file. When the dmg is mounted, you can open it like a regular folder. The user then needs to drag the software from the dmg ...
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0 votes
1 answer
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Is there a way to pipe the `hdiutil create` into a raw stream without needing to store it first?

I would like to do something like hdiutil create dest_file.dmg -srcdevice /dev/disk3 | curl -TX - PUT \ -H "Authorization: Token" \ --output /dev/null \ "https://uploadlink....
0 votes
1 answer
213 views

Changed DMG password now it won't open

Hardware: Hackintosh running Mavericks. Problem: I had a DMG where I store (stored...) stuff I obviously wanted to keep private, so I unchecked the "Save in my keychain" option. Some weeks ...
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4 votes
1 answer
751 views

How to mount a .dmg file with a different volume name (or modify it once mounted)?

MacOS Catalina, 10.15.6 Given a .dmg file, foo.dmg, I want to be able to attach it so that its contents will be visible in the Finder application under the Locations section with an arbitrary name, ...
0 votes
1 answer
47 views

Backblaze and similar services not necessary for a small hdd? Upload full disk dmg to cloud services easier?

I understand the usefulness and convenience of a site like backblaze, but if I wanted an offline backup and my drive is under 100gb, would it make sense to just make an encrypted full disk dmg image ...
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1 vote
0 answers
644 views

Reinstalling OS X on a Macbook Pro 8,1 (Early 2011) from Linux without Internet Recovery

I've been finding a way to reinstall OS X (or macOS) on the Macbook Pro 8,1 that I've been using. The Macbook has been wiped out to install only Windows 7, and then wiped out again to install Linux. ...
27 votes
2 answers
4k views

How can I place .dmg files away from the desktop?

Every time I install an app, I get a DMG file showing up on the desktop. It looks like this: How do I hide it on the desktop or keep them elsewhere to preserve the aesthetic? When I Control + click ...
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0 answers
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Problem formatting MacBook Pro

I have two Macs, a MacBook Pro of 2006 and an iMac of 2012. The second one is used by my parents for work, the first one by me for studying. The problem was that the laptop was okay but needed a ...
0 votes
0 answers
265 views

Mac .dmg backup, files disappeared?

I was having some issues with my Mac so I booted into recovery mode and made an image of my internal SSD drive to a .dmg compressed format and then saved it to my external SSD. Then I erased the Mac ...
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are disk drill 3 dmg whole system backup images the same as macos disk utility dmg backup images? / would I need to create boot usb to use them?

I have a small and slow ssd on an old macbook, I want to upgrade the ssd one day, but keep my old macbook because I don't have much money and I like it. I have auto time machine backups to a usb and ...
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1 vote
1 answer
228 views

AppleScript: Clicking a button in a dmg file

I am trying to figure out what code will send 2 clicks to open a file in an opened .dmg file using AppleScript in Script Editor. I did create the .dmg file I've been searching for ways to create a ...

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