I have a folder on my Drobo called "HFS+ Private Directory Data" and it contains old Time Machine data. I cannot delete it and do not want to reformat my drobo. I have tried 'option' trashing and various Terminal hacks but to no avail. I am using Lion now.

It's about 36 GB and I would love this space back. I'm running Lion on a 2006 MacPro and it's a four bay Drobo with 3 TB of 4 TB used. I use the Drobo for image files and a separate drive for Time Machine.

Any ideas?

  • Could you clarify a bit? Is your "separate drive for Time Machine" a statement of your new setup intentions or part of the problem? Also, drobo have several products and software that behave differently - you might want to list the specifics if you don't want a general answer. (I.e. Delete using time machine interface and contact drobo if that fails)
    – bmike
    Sep 5 '11 at 13:57

Can't you delete it from the Time Machine interface? Or is this a backup from a computer you no longer use? If the latter then there shouldn't be much/any risk in just force deleting it. If I remember right then you need to clear the immutable flag from the directory (or from all the files?)


You probably shouldn't try to delete it by hand. See the Hard Links section of: http://developer.apple.com/library/mac/#technotes/tn/tn1150.html

It contains info about hard links on your filesystem which are key to how Time Machine works. The directory should be hidden by default.

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