Welcome to the iMore Forums Create Your Account or Ask a Question Answers in 5 minutes - no registration required!
Results 1 to 2 of 2
  1. Thread AuthorThread Author   #1  
    donnation's Avatar
    iMore Intermediate

    219 Posts
    Global Posts
    7,130 Global Posts

    Default iMac rebooting issue

    I have a 2011 27" iMac that I have never had any issues with. I upgraded to Yosimite without any problems and also recently to El Capitan without issue. When the most recent El Capitan firmware update was released I began the update process. For whatever reason, my iMac froze during the update process and it wouldn't complete. After about 10 hours of it just sitting there I shut the iMac off. When I rebooted it it stop loading on the greyish apple logo screen and just sat there.

    I decided to restart it and hold down cmd-option-R. When I did this I clicked on reload OSX. It gave me the option of reloading it on to the HD, showing that everyting I had on it was still there. It reloaded fine and I didn't lose anything.

    My problem is that I needed to do another reboot later and the system froze again on the Apple logo like it did the first time. I had to reload the OS again. Is there something screwed up here that could make me have to reload the OS every time I reboot the iMac. Thanks!
  2. #2  

    Default Re: iMac rebooting issue

    It sounds like a hardware compatibility issue with El Capitan. Have you done any upgrades to your iMac or are you still running all OEM hardware? Do you have any non-Apple peripherals connected? If so try disconnecting everything for a while and see if the issue persists.

    Either way, I recommend contacting Apple Support, especially if you're still under warranty or you have AppleCare.

Similar Threads

  1. 6s Plus Issues: Comparing Samsung and TSMC Chip
    By e911emt83 in forum iPhone 6s Plus
    Replies: 32
    Last Post: 05-03-2016, 01:17 AM
  2. Old missed calls notification issue
    By JOey811 in forum iPhone 6
    Replies: 6
    Last Post: 10-26-2015, 10:50 AM
  3. New to iPhone-Couple of Issues
    By O_Othello in forum iPhone 6s
    Replies: 17
    Last Post: 10-25-2015, 08:45 PM
  4. How can I delete old call logs?
    By iMore Question in forum General Apple News & Discussion
    Replies: 2
    Last Post: 10-24-2015, 07:48 PM
  5. Replies: 2
    Last Post: 10-24-2015, 10:49 AM

Posting Permissions