Error traying to update to "el cap"

Discussion in 'OS X El Capitan (10.11)' started by aztec123, May 22, 2016.

  1. aztec123 macrumors newbie

    Joined:
    Oct 23, 2013
    #1
    Hello,

    I have a Macbook Air early 2014 (A1466) - i5 4gb - 128ssd
    A few days ago, i hit update to el capitan, and after 30 min i got a screen saying the installation could not finish. I wen to the report and said something about not having the instillation file in the download folder... ok... i said, nice one apple...

    i wen to my pc with win7 downloaded a "el capitan" dmg image and made a booteable flash drive.
    The mac didn't like it, is did a Yosemite flash drive, the mac didn't like it, i did a lion flash drive and the mac accepted it as a installation... so i did the installation.

    After the installation, i hit the update to el cap again, AND AGAIN I GOT THE SAME ERROR !!

    Could you guys give me a hand before i throw this out of my windows ?
    Let me know what details you need and i'll post them.

    Thanks
     
  2. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #2
    Are you attempting an update from Yosemite? Or from 10.11.x?

    Use Disk Utility to tell whether the startup volume appears to be OK. If not, please let us know what errors are reported.

    If it's OK, then start in Safe mode, then start in normal mode and use App Store to retry the update.
     
  3. aztec123 thread starter macrumors newbie

    Joined:
    Oct 23, 2013
    #3
    could not run in safe mode, i got this screen

    [​IMG]
     
  4. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #4
    That's a kernel panic. Start in single user mode then at the command line:

    nvram boot-args="-v keepsyms=y"

    Then restart and if a panic recurs, take another photograph. (There'll be something more human-readable in the backtrace.)
     
  5. aztec123 thread starter macrumors newbie

    Joined:
    Oct 23, 2013
  6. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
  7. aztec123 thread starter macrumors newbie

    Joined:
    Oct 23, 2013
    #7
    ok, i did that, restarted and got a lots of screens with black background and white letters, and then it wen back to the osx utility screen, restore with timemachine / re install osx / help inet / disk util /

    not sure if i'm in safe mode, but i hit re install osx and got an error saying "an error preparing the installation, try run the app again"
     
  8. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #8
    With the installer on screen, key Command-L to present a log. Use the menu within that window to show everything (not just errors) then maximise the window and take another photo.

    Or (a hint) you can copy from the log window then use Safari in Recovery OS to log in to MacRumors Forums and paste the text here.
     
  9. aztec123, May 22, 2016
    Last edited: May 22, 2016

    aztec123 thread starter macrumors newbie

    Joined:
    Oct 23, 2013
    #9
    sorry for the delay, i went to the cinema, the new xmen was good :)
    does the date has to do anything with the error ?

    i had troblues trying to boot from the las 3 OSX, maverick yasemite and el cap
    but Mountain Lion, boots and installs correctly

    Should i worry about file system ? does the flash drive has to be gpt or mbr

    [​IMG]

    [​IMG]

    [​IMG]
     
  10. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #10
    I searched the Internet for 'UNTRUSTED_CERT_TITLE' and found https://discussions.apple.com/thread/7070317?start=0&tstart=0

    Probably. Defocusing from Macs, for a moment: a system time that is significantly wrong can affect some types of authentication.

    Refocusing on your Mac: with the apparent attempt to install El Capitan in February 2005, I assume that the untrusted certificate title error arose from the system treating the certificate as being from the future; as being non-authentic.
     
  11. aztec123 thread starter macrumors newbie

    Joined:
    Oct 23, 2013
    #11
    how do i change the date ? does the mac has a BIOS or something like that ?
     
  12. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
  13. aztec123 thread starter macrumors newbie

    Joined:
    Oct 23, 2013
    #13
    how do you do it when there is no OS intalled
     
  14. grahamperrin, May 27, 2016
    Last edited: May 27, 2016

    grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #14
    It can be done from the command line, see http://stackoverflow.com/a/34130650

    Or if you have (say) a USB flash drive that's large enough for an installation of OS X, then install to that drive (maybe a friend can help you, with a Mac where the time is correct); and then boot your Mac from that drive to correct the time.
     

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