If I were you I would ignore the dmg problem until you fix the higher priority problem of the disk errors. Maybe fixing that will fix the dmg problem and I'm guessing almost certainly the spinning cursors.
Open a DMG file in Windows. Though there isn’t much you can do with a.dmg file within Windows, there are ways to open the platform within your computer. Despite the differences between the core of Mac OS and Windows 10,.dmg files can be read with the assistance of third-party apps. For example, say a DMG file isn't just storing compressed files like images and videos but is instead holding a software program. You can extract, or open, the DMG file in Windows using one of the programs mentioned below, but you can't actually execute the program and use it like you would another Windows application. Open a DMG file in Windows. Though there isn’t much you can do with a.dmg file within Windows, there are ways to open the platform within your computer. Despite the differences between the core of Mac OS and Windows 10,.dmg files can be read with the assistance of third-party apps. Find another file on the net that downloads as a.dmg, and try to open that. If it won't, the problem likely is with the new system. It should recognize.dmg files out of the box. This one is Tinkertool, an innocuous application that will do no harm if you accidentally run it, assuming it will open. Some of you reported back to me that you are not able to open the ROOT File System DMG of the iOS 10.3 Beta 2 on Windows using TransMAC or PowerISO, so I decided to inspect what's Windows' issue.
As I understand it Lion drives are formatted with a special 'recovery partition' which takes the place of the separate bootable installation disks. It contains a copy of Disk Utility. Read the following on how to use this partition.
By the way, if you are using Lion you should update your sig.
Dec 12, 2011 10:58 PM
Tips
If you're burning it to a DVD, insert your DVD, select the disk image in the sidebar, and hit the 'Burn' button. Navigate to Contents SharedSupport and look for a file called 'InstallESD.dmg'.Open up Disk Utility and drag the DMG file into the left-hand sidebar. Skip down to the last step to use it.If you want to burn Lion to a USB flash drive, plug it in and click on it in the left-hand sidebar in Disk Utility. Create dmg file on mac.
One of the potentially frustrating things about switching back and forth between Mac and Windows PCs can be proprietary formats —a key example being Apple's DMGs (disk images). Here's how to extract content from a DMG in Windows 10.The best option, whenever possible, is using 7-Zip. You probably already have it if you're a Windows regular, since it's a free and convenient way of extracting the more universal ZIP format.
Once Z-7ip is installed, find the DMG file you want to work with in File Explorer and right-click on it. In this case we're using some of Apple's free system fonts as an example.
Mouse over '7-Zip' in the right-click menu, then select 'Extract Here' or 'Extract files.' That should give a choice of where to send extracted material, though by default the app will create a subfolder in your current File Explorer location. Click 'OK' once you've chosen a place.
Dmg File Won T Open On Mac
There's a good chance you'll have to dive into the new subfolder and run extraction again. With Apple's font DMGs for example, the real meat is buried within an HFS archive, which you'll need 7-Zip for. HFS is a filesystem used exclusively by Macs.
That should be it — you may see a lot of confusing folders and files, but what you want should be buried in there somewhere.
How To Open Dmg Mac
An alternative to 7-Zip is DMG Extractor. Though it's very straightforward we're inclined to recommend using 7-Zip as your first resort, since DMG Extractor has harsh limitations without a paid license. You can't extract more than 5 files from a DMG simultaneously, and it simply won't work with encrypted files or those bigger than 4 gigabytes.Neither 7-Zip nor DMG Extractor are the ultimate solution, though. There are some DMG files that 7-Zip, nor other alternatives that we've tried will open. For instance, if on the Mac, a end-user license agreement instantly pops up, we've found that most of the time, Windows solutions will choke on these.