Please visit the new Mac-Forums Facebook page:
https://www.facebook.com/macforums1




Results 1 to 7 of 7
  1. #1
    Cannot install Sierra
    Hi,
    After a reset I try to install a new OS on my Ima (around 3 years old)
    But Apple chooses to install Sierra (instead of the latest OS) probably because of the age of my Mac.
    Thats not a big problem, but he doesn't do it. It does not work.
    I've red somewhere that if you cannot install a lower OS when on the same computer you had a higher OS (Mojave in my case).
    Anyway, it looks like one cannot not choose what OS to have installed.
    Anyone the solution for this?
    Thanks a lot!!!

  2. #2
    Cannot install Sierra
    IWT's Avatar
    Member Since
    Jan 23, 2009
    Location
    Born in Scotland, Worked in Scotland then England, Now live in Wales
    Posts
    5,896
    Your Mac's Specs
    iMac 5K Retina 27", August 2019, 3.6GHz Intel Core i9, Memory 32GB, 2TB SSD, macOS Mojave 10.14.6
    Rep Power
    19
    A very warm welcome to our Forums.

    We need a few points of clarification. You are quite correct. You cannot install an OS earlier than that which shipped with the Mac.

    However, it would be helpful to know how you reset your Mac. This is because using one method installs the OS that was last on your Mac, whereas, the other method tries to install the original OS which came with the Mac when it first shipped out.

    You also imply, I think, that you did have Mojave installed at one time or were intending to do so?

    We are delighted to help and will do so, but if you could answer the questions about, that would be a great help.

    It would be nice if you can tell us the exact year the Mac was built.


    Please post back.

    Ian
    Ian

  3. #3
    Dear Ian,

    Thank you very much for your answer!
    This is how it is: My wife has a new Mac and I am going to use hers (IMac1). So on this Imac1 I did a reset via disk utilities, I think I choose the first one called "GUID-partition" or something. (took about a few minutes).
    Then I dit restart via "R" and "command R" and choose to install a new OS (without having a choice between different types of OS)
    I did it several times. (The last time even I could not do any action because I couldnt connect the wireless mouse/keyboard).
    For the rest: no external disks are connected and in the logfile I can see a lot of messages like "Could connect to this and this and couldnt do this and this".
    I hope you have enough information to get a clear view;-)
    Thanks for your time and effort,
    Jan

  4. #4
    Cannot install Sierra
    IWT's Avatar
    Member Since
    Jan 23, 2009
    Location
    Born in Scotland, Worked in Scotland then England, Now live in Wales
    Posts
    5,896
    Your Mac's Specs
    iMac 5K Retina 27", August 2019, 3.6GHz Intel Core i9, Memory 32GB, 2TB SSD, macOS Mojave 10.14.6
    Rep Power
    19
    Thank you very much for posting back, Jan.

    I could comment on what you did and how you might have chosen a different way, but that is history now.

    The problem you have the mouse and keyboard is because the Bluetooth connection is not being established any longer.

    The other problem may be, I only say may be, that when you erased the Hard Drive, you also erased the Recovery Partition. If so, then the Command plus R sequence will no longer function.

    Two things I can suggest. If you could find, borrow or otherwise get a wired keyboard and mouse, it would help you enormously.

    Secondly, I suspect that the only way forward is to use the Internet Recovery option to install the OS which originally came with the Mac. To do this, hold down Option Command R - or Option Shift Command R on rebooting to enter Internet Recovery.

    This article from Apple explains the situation: About macOS Recovery - Apple Support

    See if this helps. And please don’t forget that we are still here if problems persist.

    Ian
    Ian

  5. #5
    Cannot install Sierra
    Slydude's Avatar
    Member Since
    Nov 16, 2009
    Location
    North Louisiana, USA
    Posts
    14,442
    Your Mac's Specs
    2.8 GHz 2008 MacBook Pro 10.11, 8 GB mem, iPhone XS, 2015 iMac 16 GB 10.14.4 beta
    Rep Power
    24
    @@Grr44 Once you have completed the Internet Recovery and re-install the OS you should be able to update to a more recent OS. If the Mac is only three years old you should be able to install Mojave.
    “Hard work beats talent when talent fails to work hard.”
    Kevin Durant

  6. #6
    Hi Ian,

    Sorry for not answering you back sooner, but I just retried and YES, everything s fine now. The machine choose to install Mojave;-)
    I d like to express my appreciation for you time & effort!
    Thanks and kind regards from Rotterdam,

    Jan

  7. #7
    Cannot install Sierra
    IWT's Avatar
    Member Since
    Jan 23, 2009
    Location
    Born in Scotland, Worked in Scotland then England, Now live in Wales
    Posts
    5,896
    Your Mac's Specs
    iMac 5K Retina 27", August 2019, 3.6GHz Intel Core i9, Memory 32GB, 2TB SSD, macOS Mojave 10.14.6
    Rep Power
    19
    Great news, Jan. Well done.

    I've been to the Netherlands many, many times. Wonderful country. Happy memories.

    Ian
    Ian

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. High Sierra does not install on SSD
    By colinwebb in forum macOS - Operating System
    Replies: 23
    Last Post: 11-25-2017, 09:00 PM
  2. macOS Sierra - Won't install
    By milomak in forum macOS - Operating System
    Replies: 35
    Last Post: 11-12-2016, 06:43 PM
  3. Apple Mail App after Sierra install
    By neilf in forum macOS - Apps and Games
    Replies: 7
    Last Post: 10-04-2016, 11:26 PM
  4. mac os sierra install failure
    By Alberto5398 in forum macOS - Operating System
    Replies: 7
    Last Post: 09-28-2016, 06:40 PM
  5. Install Sierra on Mac Pro 3,1?
    By Rocketfish in forum macOS - Operating System
    Replies: 3
    Last Post: 09-24-2016, 08:51 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •