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Hello rollinglenn,
I see that your MacBook stopped opening .DMG files after you updated to macOS Sierra. I can imagine it's concerning to have something not work like it did on a previous operating system. I'm happy to help assist you in finding the best resolution.
macOS should read these files and you should be able to open them fine with no issues, so I would suggest doing a fresh restart of your computer to see if that helps.
If you still have an issue after that, try a backup of your Mac's important data and a reinstall of macOS using the following articles:
Use Time Machine to back up or restore your Mac
How to reinstall macOS
Please let us know if this helps.
Have a great day!
I see that your MacBook stopped opening .DMG files after you updated to macOS Sierra. I can imagine it's concerning to have something not work like it did on a previous operating system. I'm happy to help assist you in finding the best resolution.
macOS should read these files and you should be able to open them fine with no issues, so I would suggest doing a fresh restart of your computer to see if that helps.
If you still have an issue after that, try a backup of your Mac's important data and a reinstall of macOS using the following articles:
Use Time Machine to back up or restore your Mac
How to reinstall macOS
Please let us know if this helps.
Have a great day!
The dmg file download wont open in mac sierra please help. Double-click the downloaded KORG Gadget Le.dmg file. Double-click KORG Gadget Le.pkg to open the installer. Follow the instructions on the screen to install KORG Gadget Le for Mac. After installation is complete, open KORG Gadget Le to carry out license verification. Sep 21, 2007 How to Install Software from DMG Files on a Mac. 21 September, 2007 by Tom Harrison in mac os x. A.DMG file is a container file commonly used to distribute applications for Mac OS X. Installing software from one of these requires you to mount the image and move its contents to your computer’s “Applications” directory. Nov 13, 2019 Double-click the DMG file. This will cause your Mac to attempt to open it, resulting in a pop-up message that says 'Name can't be opened because it was not downloaded from the App Store.' If you don't see this window pop up, skip to the 'Review the DMG's contents' step near the end of the section. I too have had similar occurances with dmg files. Some work, others are saying they have output/input errors. Today trying to place a dmg file on my firewire drive in case i need it later said it could not copy because.' Some of these items.names are too long for the destination.
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Dmg Files Won't Open Mac Sierra Mac
Oct 17, 2016 11:29 AM