Can't open any .dmg

Discussion in 'macOS' started by BluAffiliate, Mar 10, 2016.

  1. BluAffiliate macrumors regular

    Joined:
    Feb 16, 2010
    #1
  2. BluAffiliate thread starter macrumors regular

    Joined:
    Feb 16, 2010
  3. jgelin macrumors 6502a

    jgelin

    Joined:
    Jul 30, 2015
    Location:
    St Petersburg, FL
    #3
    Is it any .dmg or is it just a specific one? This error can sometimes mean that it is corrupted from downloading or it can mean that there is no partition map for the OS to mount onto (which is usually the case with certain installer medias, like Ubuntu).

    Also, you can try and mount the .dmg from the command line in the Terminal.app found below:
    http://osxdaily.com/2011/12/17/mount-a-dmg-from-the-command-line-in-mac-os-x/
     
  4. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #4
    If you can open those .dmg files from a different user account -
    Maybe try the diskimage pref files for your user account.

    Delete these files from your user Library/Preferences folder:
    com.apple.diskimages.fsck
    com.apple.frameworks.diskimages.diuiagent.plist
    com.apple.frameworks.diskimages.plist
    com.apple.frameworks.diskimages.uiagent.plist
    (if you don't find those files, you are in the wrong Library folder.)
    Quickest way to your user Library is from the Go menu in the Finder, while holding your Option key.

    Drag those files to your trash. Log out and log back in to your user, or simply restart your Mac.
     
  5. jgelin macrumors 6502a

    jgelin

    Joined:
    Jul 30, 2015
    Location:
    St Petersburg, FL
    #5
    Whoops, missed this line in initial posting. Disregard my steps!!
     
  6. BluAffiliate thread starter macrumors regular

    Joined:
    Feb 16, 2010
    #6
    This worked:

     
  7. BluAffiliate thread starter macrumors regular

    Joined:
    Feb 16, 2010
    #7
    Actually it stopped working :(.

    Also mounting USBs doens't work any more.
     
  8. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #8
    Does it still work when you are logged in to another user account?
     
  9. BluAffiliate thread starter macrumors regular

    Joined:
    Feb 16, 2010
    #9
    Yes it does.
     
  10. BluAffiliate thread starter macrumors regular

    Joined:
    Feb 16, 2010
  11. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #11
    Is that a good "Dump:" (working now), or a bad "Dump:"? (out on the curb, waiting for trash pickup - D: )

    I expect that you might have a fix after you update to 10.11.4
     
  12. BluAffiliate thread starter macrumors regular

    Joined:
    Feb 16, 2010
    #12
    I hoped, unfortunately, it did not fix it :(.
     
  13. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #13
    So, try deleting the same set of files again. There's something in your user account that is "disturbing" the image mounting software, and it will take some experimenting to find out where that is.
    I would probably next try deleting the Caches folder from your user folder. Drag that folder to your trash.
    Restart your Mac, then empty the trash (you can't empty the caches folder completely until you restart)
    Added to those files that I mentioned - try these files
    com.apple.BezelServices.plist
    com.apple.diskimages.fsck
    com.apple.systemuiserver.plist

    Drag those to the trash. Restart again (or just log out, then log back in to your user)
     
  14. BluAffiliate thread starter macrumors regular

    Joined:
    Feb 16, 2010
    #14
    Thanks, givinv this a try.

    I reinstalled OSX and the .dmg issue is fixed (from a restore, not fresh) but USB still not showing. Let me see the new fix and get back to you.
     
  15. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #15
    Does your Disk Utility show the USB drive?
    You can also look in your System Information, under either the Storage, or the USB tab.
     
  16. BluAffiliate thread starter macrumors regular

    Joined:
    Feb 16, 2010
    #16
    Yes!

    And DMG files now open. But USB No go. Tried with different devices that work on my iMac.

    Got an apple store appointment at 7pm today
    --- Post Merged, Mar 26, 2016 ---
    Ok

    This is crazy but everything works now... !!!
     
  17. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #17
    hmmm
    What does " USB No go" mean?
    You do not see any USB devices in your System Information?
    Do any USB storage (flash drive, etc) devices appear in any way in your Disk Utility?
     

Share This Page