Why Wont Some Dmg Files Open On My Mac

Posted By admin  On 24.05.21

Sep 04, 2014 I have a silly question. When you install most anything on osx, why does the DMG file remain mounted; forcing us to eject it manually? To this day whenever you install java or whatever the open DMG needs to be closed. Why doesn't apple clean that extra step up? Am I missing.

Apple apps such as QuickTime Player, Photos, and Keynote work with many kinds of audio and video formats. Some apps prefer specific formats, but QuickTime movie files (.mov), most MPEG files (.mp4, .m4v, .m4a, .mp3, .mpg), some AVI and WAV files, and many other formats usually work in most apps without additional software.

Older or specialized media formats might not work in your app, because the format requires software designed to support it. If that happens, your app won't open the file or won't play back its audio or video.

How to search for an app that works with your file

You might already have an app that supports the format of your file. If you don't know which of your installed apps to try, your Mac might be able to suggest one:

  1. Control-click (or right-click) the file in the Finder.
  2. From the shortcut menu that opens, choose Open With. You should see a submenu listing all of the other installed apps that your Mac thinks might be able to open the file.

If none of your installed apps can open the file, search the Internet or Mac App Store for apps that can play or convert the file:

  • Include the name of the media format in your search. To find the format, select the file and press Command-I to open an Info window. The format might appear after the label Kind, such as ”Kind: Matroska Video File.”
  • Include the filename extension in your search. The extension is the letters shown at the end of the file's name, such as .avi,.wmv, or .mkv.

Learn more

  • QuickTime Player (version 10.0 and later) in OS X Mavericks through macOS Mojave converts legacy media files that use certain older or third-party compression formats.
  • Learn about incompatible media in Final Cut Pro X and iMovie.
Some

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.


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.

Dmg Files In Windows


Why Won't Some Dmg Files Open On My Mac Free


Why Wont Some Dmg Files Open On My Mac Download

By the way, if you are using Lion you should update your sig.

Why Won't Some Dmg Files Open On My Mac Download

Dec 12, 2011 10:58 PM