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Hey everyone,



I've seen this issue reported on various search results, namely this one at Apple Discussions.
After doing a quick search on JAMF Nation, I don't see it discussed - so either I missed it or not many people are facing the issue. Here goes:



When we mount a volume (either a .dmg or USB drive), the item shows up in Finder and is seen properly doing 



diskutil list


and can be accessed without issue.



Things that don't work:
- Clicking the "eject" icon next to the volume name.
- Dragging the volume to the trash



Things that do work:
- Ejecting the disk via command line



hdiutil eject -force disk2s2


- Selecting the volume in Disk Utility and choosing "eject"



It's not a show-stopper (we've been dealing with it since at least January - on all versions of Yosemite, including 10.10.4) but it's sure annoying. I can definitely script something and put it in Self Service, but it seems that you should be able to eject a mounted volume using the native OS functionality.



Has anyone come across this and found a solution?
Thanks in advance!



-Mike

Not sure if this will help you on 10.10.x but it has helped me in the past:



Bad file in /private/etc/



Hopefully it will help in some way.

Thanks @perrycj for the suggestion. It gave me some info to look at for future troubleshooting.



The /private/etc/authorization file has been deprecated, but I was able to verify that the proper settings existed in /System/Library/Security/authorization.plist



Since that didn't go anywhere, I decided to take Casper out of the equation (not sure why I didn't try this before) and ran this:



sudo jamf removeFramework


I'm able to unmount without issue after removing the JAMF framework.



After re-enrolling & rebooting, the problem is back.



This tells me that I'm probably being burned by one of our config profiles. I'll do some digging and post a resolution after I find out what's to blame.

You can't eject a Volume (without a force) if the OS thinks that the Volume is being accessed at the time.



Eg. Use terminal to CD into a Volume and then try and eject, it will fail.

I got it. We had a config profile set with a Finder payload.



In the "Commands" section, the option to Eject was unchecked. Once I selected that option & rebooted, all is well now.



Thanks for your help. This one can be boiled down to operator error.

I've been caught by that one before. I think it's unticked by default which isn't good!

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