new imac clean install issue

Discussion in 'iMac' started by evilgawd, Jun 14, 2017.

  1. evilgawd, Jun 14, 2017
    Last edited: Jun 14, 2017

    evilgawd macrumors newbie

    evilgawd

    Joined:
    Jun 23, 2010
    #1
    Hi

    Just got my new imac 2017 and im getting some weird issue with it (non apple keyboard get non responsive or apps just hang or either go crazy and start using 100% cpu for no reasons )

    So long story short, i tried to boot off a sierra bootable usb key ( which ive used to reinstalled 2 other imac this week) . When I try to boot with it, it just show a white circle with a line ( like a "do not" sign) and stop there ?

    Also , in the apps store it looks like I cannot download Sierra anymore ( if i wanted to make a new usb bootable install)

    Anyone got a clue ?

    Thanks
     
  2. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #2
    Possibly the USB is an earlier build of Sierra. Regardless you can hold CMD+R on startup to boot into the recovery and wipe/reinstall from there. Alternatively hold CMD+ALT+R to boot into Internet Recovery. One of those two options should work if you need to reinstall macOS.
     
  3. ApfelKuchen macrumors 68030

    Joined:
    Aug 28, 2012
    Location:
    Between the coasts
    #3
    Note that with Sierra 10.12.4 and later, there's a new key combination and reinstall options. https://support.apple.com/HT204904 (see the "Start up from macOS Recovery" section of the article).
     
  4. evilgawd thread starter macrumors newbie

    evilgawd

    Joined:
    Jun 23, 2010
    #4
    Ok havent tried this way before ... doesnt go far , it says its checking with apple if im allowed then dies there
    I assume the issue is because im wired and need to set an IP manually .

    This is easy with ifconfig but setting DNS seems to require networsetup which is not available via CLI . Any other way to set this up ?

    Thanks
     
  5. UL2RA macrumors 6502a

    UL2RA

    Joined:
    May 7, 2017
    #4
    Download a brand new copy of Sierra from the App Store and make a new USB. This has happened to me before where q USB I had used to install Sierra on other Macs no longer works. They expire the installation and a new download is required. It's very annoying.
     
  6. evilgawd thread starter macrumors newbie

    evilgawd

    Joined:
    Jun 23, 2010
    #5
    Seems i cannot download it anymore .. at least not from the 2017 imac . I did try from an older mac , same issue

    Is internet required when you go into that recovery mode to clean install ? if so any way to setup DNS manually ?

    Thanks
     

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  7. UL2RA macrumors 6502a

    UL2RA

    Joined:
    May 7, 2017
    #6
    Just keep pressing download. It will say that every time. It's just telling you you already have the current version installed.
     
  8. evilgawd thread starter macrumors newbie

    evilgawd

    Joined:
    Jun 23, 2010
    #7
    Nope wont download :/
     
  9. UL2RA macrumors 6502a

    UL2RA

    Joined:
    May 7, 2017
  10. morphodone macrumors member

    Joined:
    Nov 6, 2007
    #9
    Look in your applications folder for the Install MacOS Sierra and delete it.
     
  11. evilgawd thread starter macrumors newbie

    evilgawd

    Joined:
    Jun 23, 2010
    #10
    its not there ... its either a bug with the new imac or they decided you cant reinstall from usb anymore
     
  12. Taz Mangus macrumors 68040

    Taz Mangus

    Joined:
    Mar 10, 2011
    #11
    Give Apple Support a call, that is what I would do.
     
  13. UL2RA macrumors 6502a

    UL2RA

    Joined:
    May 7, 2017
    #12
    It's the former, not the latter. Call Apple as Taz suggested.
     
  14. cottington macrumors member

    Joined:
    Feb 27, 2008
    #13
    I am seeing the same issue with my 2017 imac. I downloaded the Sierra installer from the app store today, created a fresh bootable USB drive, and my iMac will not boot to it. Same issue as op, white circle with line (Apple calls it the prohibitory symbol). Both my 2012 rMBP and 2015 Macbook boot to this new USB drive just fine, so I know the drive is good. Yes, Recovery and Internet Recovery are options, but It would be nice to get to the bottom of why bootable USB drives are not working in this case.
     
  15. nambuccaheadsau macrumors 6502a

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #14
    The version installed on your new iMac is different to what is available for download from the App Store. When macOS Sierra is updated to OS X.12.6 try again then.

    Why do you need to do an OS re-install on a brand new machine?
     
  16. cottington macrumors member

    Joined:
    Feb 27, 2008
    #15
    Hmm, I guess I could try to create a bootable USB of the 10.12.6 public beta. The installer I downloaded from Apple today was 10.12.5. The iMac came with 10.12.4.

    It's for peace of mind - it was an open box item.
     
  17. nambuccaheadsau macrumors 6502a

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #16
    You could always use an external drive to clone the current operating system which will be bootable, and then a thumb drive when OS X.12.6 is released, then use the external for your backups.
     
  18. evilgawd thread starter macrumors newbie

    evilgawd

    Joined:
    Jun 23, 2010
    #17
    Glad to hear im not alone in this situation

    Let us know if it work with the beta :)
     

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