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imac late 2013 27

  1. Doggiedogdog

    iM 4,1-14,4 Open core install problem target disk locks itself??

    I’m installing Sonoma on a late 2013 iMac everything goes fantastic. Just up to the point where I try to install the installer on l the brand- new, extended Journaled external SanDisk Pro SSD. it tells me it’s locked. So I go out make sure it’s unlocked go back again and find out that it’s...
  2. Chorlton

    Update Sierra on iMac 27" Late 2013 to which MacOS?

    Hi all, I'm thinking of upgrading my MacOS Sierra on my Late 2013 27" iMac to a more recent OS. The main question I have is which version of Mac OS should I upgrade to that will maintain both functionality and speed. I have already upgraded the RAM to 20Gb. Thanks Simon. :)
    • Chorlton
    • Thread
    • imac late 2013 27 sierra upgrade
    • Replies: 3
    • Forum: iMac
  3. D

    Late 2013 27" iMac won't power up!

    Hi, my iMac was working fine, and is still as good as new... All the sudden, yesterday morning I tried to start it up.. but no response after pushing the power button. I tried disconnecting the cable for a while, but after plugging it back in, still no response whatsoever. Please help me, I...
    • Daanrw
    • Thread
    • doesnt start up imac late 2013 27 power button power up wont power up wont start up
    • Replies: 2
    • Forum: iMac
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