I recently upgraded to Mojave. So far I haven't had any problems with it. However, when I restart the Mac, I get a pop-up saying '“rdmgrab” is not optimised for your Mac and needs to be updated.'

There is a process called rdmgrab that runs in the background. (There's another called rdmd, but I don't know if it's related.)

There is a file called rdmgrab in /opt/local/bin, a rdmgrab.plist and a few rdmgrab_[1811xx].log files.

I have no idea where this file came from. Does anyone have an idea what it might be, and whether it's safe to dump it?

  • 1
    You can try renaming it before deleting it. Anything in /opt directory is add-on software.
    – Allan
    Commented Nov 26, 2018 at 21:38

1 Answer 1


I did a bit of searching on this. I don't suppose you have TeamViewer, LogMeIn, VNC or another remote viewer installed? Chrome desktop anywhere?

This could be related to that?

See this other stack exchange post:


Thanks, Ed

  • Thanks. I do use VNC, but not the others. But I renamed both rdmgrab and rdmd, and VNC seems to be working. Commented Nov 27, 2018 at 0:44

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