I bought a 2014 late Mac mini today from a shop where it was a test device. It has been registered but I got it cheaper. My problem is: it has macOS Sierra installed on it, which runs very slow, and the finder seems to be messed up. It does not show any file content.

Mac mini specifications:

  • CPU: Dual-core i5 1.4 GHz
  • RAM: 4 GB
  • HDD: 500 GB

Are current Mac mini devices shipped with Sierra, or it has been upgraded from El Capitan? It has been registered in 15 May 2017. Is this model fully and sufficiently compatible with macOS Sierra?

  • What exactly is your question here?
    – nohillside
    Commented Sep 6, 2017 at 21:34
  • I'm running Sierra on a 2011 Mini without problems or signs of it being overloaded. Any used computer I bought would get an immediate OS reinstall because there's no way to know what's installed on it, including malware. The thing could be mining bitcoin for all you know.
    – Kyle Jones
    Commented Sep 7, 2017 at 2:20
  • I've expanded the title to be more specific about the problem you are having as just saying ‘problems’ doesn't help anyone else looking for this question. Feel free to edit to better summarise the question you are asking
    – grg
    Commented Sep 7, 2017 at 10:03

1 Answer 1


I would suggest re-installing the latest macOS that was installed on your Mac, without upgrading to a later version. This can be accomplished by pressing and holding Command-R immediately after pressing the power button to turn on your Mac mini.

Source: https://support.apple.com/en-us/HT204904

  • 2
    A 2014 Mac Mini is perfectly capable of running Sierra with reasonable performance. Reinstalling the OS is a good starting point, but I would upgrade to Sierra nevertheless from there.
    – nohillside
    Commented Sep 6, 2017 at 21:34

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .