2013 imac went from mavericks to sierra a month ago

Discussion in 'macOS Sierra (10.12)' started by lasloduncan, Mar 7, 2017.

  1. lasloduncan macrumors regular

    Mar 2, 2015
    lots of very odd stuff...many safe mode starts-malewarbytes, ccleaner one or two vram starts....goofy stuff on beach ball- windows slow to open ..deleted cache got rid of extensions blah blah--does not like my hd discs I have plugged in via a 3.0 hub and other inconsistent operational anomalies...biggest deal is takes over two minutes to boot up from a complete shutdown...so is it operator problem? sierra? both or full moon?--Thank You
  2. keysofanxiety macrumors G3


    Nov 23, 2011
    Likely faulty HDD from your description. Run SMART Utility and anything other than Passed would confirm HDD is dying: https://cloudfront.volitans-software.com/smartutility323.zip

    If it is the HDD, you can either replace it with an SSD or install macOS to an external SSD and run it through that.
  3. Fishrrman macrumors G5


    Feb 20, 2009
    Well, if you're having all sorts of problems with Sierra… why not go back to El Capitan?

Share This Page