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macOS High Sierra 10.13.6 bricked MacBook Pro 2011

Hello,


after installing last security updates my Mac Pro is bricked.


Installation breaks with info that OS could not be installed and diagnostics need to be run.


  • Running diagnostics ends up with MEM error: 4MEM/62/40000000 0x82cc2f18
  • My RAM was perfectly fine till the update. Diagnostics properly detect MEM params.
  • Resetting PRAM and SNC won't help.
  • removing, cleaning or changing slots or leaving one MEM slot empty does not help


It's not the first time sys update are crushing my machine. I feel like I am using Windows all over again after 10-year break.


Is internet recovery installation the only way to go?


MacBook Pro 13″, macOS 10.13

Posted on May 28, 2020 4:58 AM

Reply
Question marked as Top-ranking reply

Posted on May 28, 2020 1:56 PM

I see I am not only one fighting with this security update, so I am posting a more verbose step-by-step instruction what I did to make it work again.


Case: Reboot after Update Download resulted in ~"OS could not be installed, please run diagnostics pressing D on start..."


  1. Reboot and instant "D" press -> Hardware Diagnostics -> Extended Test -> Result: MEM ERROR
  2. Dismantling Macbook -> deinstalling RAM -> Cleaning up slots and connections -> setting everything back together
  3. Reboot and the same error -> next reboot + "D" -> Hardware Diagnostics -> Extended Test -> NO ERRORS
  4. Ok, so MEM is ok, let's try disk repair -> reboot + cmd + "S" to enter single user mode -> as instructed in terminal fsck -fy -> OS disk test -> NO ERRORS
  5. Ok, so MEM and DISK is ok -> reboot + "left shift" to enter safe mode -> OS is starting "normally" -> App Store -> Updates -> Download and Install
  6. Reboot -> ~"OS could not be installed, installer error" -> Reboot...
  7. Ok, system is UP and RUNNING -> Reboot, reboot, reboot... just to make sure problems are over.
  8. Updated and working...


Seriously, windows-alike update feeling :) Hope it helps you get your Macs back.

Similar questions

7 replies
Question marked as Top-ranking reply

May 28, 2020 1:56 PM in response to krzysztof_ow

I see I am not only one fighting with this security update, so I am posting a more verbose step-by-step instruction what I did to make it work again.


Case: Reboot after Update Download resulted in ~"OS could not be installed, please run diagnostics pressing D on start..."


  1. Reboot and instant "D" press -> Hardware Diagnostics -> Extended Test -> Result: MEM ERROR
  2. Dismantling Macbook -> deinstalling RAM -> Cleaning up slots and connections -> setting everything back together
  3. Reboot and the same error -> next reboot + "D" -> Hardware Diagnostics -> Extended Test -> NO ERRORS
  4. Ok, so MEM is ok, let's try disk repair -> reboot + cmd + "S" to enter single user mode -> as instructed in terminal fsck -fy -> OS disk test -> NO ERRORS
  5. Ok, so MEM and DISK is ok -> reboot + "left shift" to enter safe mode -> OS is starting "normally" -> App Store -> Updates -> Download and Install
  6. Reboot -> ~"OS could not be installed, installer error" -> Reboot...
  7. Ok, system is UP and RUNNING -> Reboot, reboot, reboot... just to make sure problems are over.
  8. Updated and working...


Seriously, windows-alike update feeling :) Hope it helps you get your Macs back.

macOS High Sierra 10.13.6 bricked MacBook Pro 2011

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