opening dmg files, no mountable file systems *FIXED*

[mike86]

Hi All

 

I have a really strange thing happening...I noticed last week when doing flash updates that 3 of our macs wouldnt mount any DMG files. Here's what I've tried.

 

Restore OSX...No Luck

Complete rebuild. Working yesterday.

Install of Sibelius & Garage band...All working.

Come in this morning & find that it is now back to the same error.

 

Google has not turned up anything useful.

 

If anyone could help that would be great.

 

Thanks

 

M

Edited November 12, 2014 by mike86

[Arthur]

Does the Flash Player update released yesterday (v15.0.0.223) still have the same issue?

 

Are you using the "DMG installer for System Administrators" from Adobe's distribution page?

[mike86]

Should have said, this happens with every DMG file, no matter which location i open it from, network, external hdd etc...The same files work on other macs. I can't put my finger on the problem, as was working last night, come in today & it isn't, nothing has changed, mac hasn't even been switched off.

[Arthur]

Does it make any difference if you try mounting a DMG through Terminal?

 

sudo hdiutil attach ~/Desktop/Example.dmg

Edited November 12, 2014 by Arthur

[Norphy]

Do you have any .mobileconfig profiles installed? I had the same problem a little while ago and it turned out that the user-side profile file had somehow caused this. I fixed it by recreating the mobileconfig file and redeploying it.

 

A short term test is to remove the user profile and reboot the Mac.

[mike86]

Does it make any difference if you try mounting a DMG through Terminal?

 

sudo hdiutil attach ~/Desktop/Example.dmg

 

No dice... hdiutil: attach failed - no mountable file systems

 

- - - Updated - - -

 

Do you have any .mobileconfig profiles installed? I had the same problem a little while ago and it turned out that the user-side profile file had somehow caused this. I fixed it by recreating the mobileconfig file and redeploying it.

 

A short term test is to remove the user profile and reboot the Mac.

 

 

I did have a mobile config installed, i've removed and rebooted but still have the issue.

[mike86]

I took a time machine backup yesterday before binding to OD/AD & installing the profiles. I'm going to restore to this & try with a new mobile config file & see if the issue reoccurs, in the meantime if anyone has a fix for the other 2 macs that have the issue, without me having to rebuild them, then that would be much appreciated.

[mike86]

Time machine backup...All working, added to AD & OD, reboot & working.

 

Reboot not working...

 

Ideas? It's driving me insane.

[mike86]

also notice, that I added it to a group in WGM & save, however it removed itself on close & reopen, even though the settings are applying.

[mike86]

Here was the fix:- Remove machine from AD/WGM/OD

 

Unbind at the client end.

Uninstall any profiles.

 

Restart.

 

Rebind to AD/OD Server

 

Reboot, Install profiles manually.

 

Now working.

 

Phew.

 

Cheers guys.

 

M

[robjduk]

better than my fix where I just removed flash from the macs forever!