Jason, the program that the file was exported from is Chief Archetect. I could not open the one you attached ether. Were you ale to open either one with AS9? I was able to opoen with Google Sketchup and exported as a 2D file and was able to open in AS9. I can't open DMG-files anymore because OS X associates dmg-files with another program. Usually when I opend.dmg files a 'virtual disk' opened, now another program starts. I tried the Open with (Openen met in Dutch) function, but I don't know which program I have to choose. When I have this problem on a Windows PC I just select explorer.exe. DMG file refers to Apple Disk Image, which is a common file format for Apple MAC users. If you are an Apple MAC user, you might have seen this file extension previously. Generally, when you create a recovery disk of OS X, your system create a.dmg file that users mainly need to burn on a DVD or USB.
I JUST got this problem. I have been using my mac for a couple of years now. My Mac is a Macbook Pro, Version 10.7.2 (Lion)
Recently, I have been unable to open Dmg files, whenever I double click it, I get a message saying: 'Warning, the following disk images couldn't be opened' 'Reason: legacy image should be converted' I never had this problem before, so why am I getting it now? How do I fix this?
https://discussions.apple.com/thread/3158789?start=0&tstart=0
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HomeHow to TipsWhat is DMG File And How to Open It
In computing world, DMG or (Disk Image File) is a file extension that belongs to Mac OS X. DMG file can also be termed as Apple Disk Image. The icon used equivalent to this file is an Internal Hard-drive. Disk Images are generally used worldwide in-order to distribute applications and software across the Internet. DMG file provides some attractive features that allow securing password along with file compression.
These virtual or physical Apple disks can be cloned from one to another. This is one of the powerful features of Mac.
Tip: If you want to open and view DMG files of Apple Mac OS X so, you can try DMG Viewer tool.
Why DMG Files Are Created?Can't Open Dmg File Mac Mojave
Earlier, Mac applications made use of Resource fork. These are the part of file system on Mac Operating System, which consists of both the structured data and non-structured data. Mac could not transfer these Resource forks over the mixed networks. Hence, the usage of Resource fork dwindled and this was the reason that Apple created disk image formats(DMG). The Resource forks are very important as they contain Meta data regarding the file.
Mounting and Dismounting on Mac OS
It is equivalent to plugging in a removable drive, where E drive is automatically created and while removing one chooses ‘Safely Remove Device’. Similarly, you have to eject the Mac drive for both the virtual and physical.
Two Disk Formats supported are:
MIME Type of DMG File:
application/x-apple-diskimage. Supported File Systems
How to Open DMG Files?
In Mac:
Resize DMG Files
In Windows:
Originally, DMG files are the default Disk Image file for Mac. Hence, they can be opened only on Mac OS. Since there are no manual methods available to view the DMG Files in Windows, users can install external third-party software available online on Internet. DMG Viewer is one of the tools from such category. The software provides you with the following features:
ConclusionCan't Open File Explorer
Considering the ongoing necessity to view DMG files, we have described a manual process to let the users understand how to open & view DMG files. Else, users can take the help of a reliable third-party tool named as DMG Viewer. It is the best application that helps to read .dmg files in Windows OS. Users can use any approach as per their choice.
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