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Problems with macOS Sierra? This fix may help you.

Hi, everyone.


I wanted to post a solution I developed because of some erratic behavior I was experiencing with macOS Sierra (no sound, slow boot, sluggish performance, ...etc). This fixed all my issues:


  1. After upgrading to Sierra, reboot your system and reset NVRAM and SMC
    1. Reset NVRAM - How to Reset NVRAM on your Mac - Apple Support
    2. Reset SMC - Reset the System Management Controller (SMC) on your Mac - Apple Support
  2. Boot normally
  3. Restart
  4. Boot to Recovery Mode (Command + R) - About OS X Recovery - Apple Support
    1. Launch Disk Utilty
      1. Click on your Physical Disk (should be the one above Macintosh HD)...click First Aid and allow it to Run
      2. Click on Macintosh HD...click First Aid and allow it to Run
      3. Exit Disk Utility
    2. Launch Reinstall macOS and complete the reinstall. Be very patient.
  5. Once the reinstall process is complete:
    1. Restart
    2. Reset NVRAM again - How to Reset NVRAM on your Mac - Apple Support
    3. Reset SMC again - Reset the System Management Controller (SMC) on your Mac - Apple Support
    4. Boot normally
    5. Restart
    6. Boot to Recovery Mode again (Command + R) - About OS X Recovery - Apple Support
      1. Launch Disk Utility
        1. Click on your Physical Disk (should be the one above Macintosh HD)...click First Aid and allow it to Run
        2. Click on Macintosh HD...click First Aid and allow it to Run
        3. Exit Disk Utility
      2. Exit Recovery Mode and boot normally



Happy to help with this,


BrainSel

macOS Sierra (10.12)

Posted on Sep 26, 2016 3:52 PM

Reply
57 replies

Sep 30, 2016 12:17 PM in response to Larry Sochrin1

How Big?


If you have the space, make it the size of used data plus extra for room to grow. Otherwise, a 30-50Gb partition will give you enough room for a good test of Sierra.


After you create the new install, you'll want to test with your most used apps. You can drag over a few files for testing. What you don't want to drag over are files in your User's Library.


No, you don't have to delete anything.


If you don't have a lot of free space on your drive, you can clone your drive to an external drive. Boot from the clone by setting Startup Disk as the clone. While booted from the clone you can run Disk First Aid to verify your internal drive then erase the drive. Install Sierra on the internal drive.


Create a Clone backup:


A clone is an exact bootable copy of your internal drive. Unlike standard copying of all files to another drive, the clone software copies hidden files along with other in-use files that are not available when you copy over files to another drive.

Software used to Clone: (Free to do an erase and copy. Paid version gives you smart updates and scheduled updates)

SuperDuper! http://www.shirt-pocket.com/

Oct 4, 2016 5:47 AM in response to BrainSel

Dear BrainSel,


I've recently upgraded my IOS to Sierra from El Captain.
My problem, after system boot & login the desktop appear squeezed (kind of flickering) for a second & back to normal.


I've observed this issue is because of using Scaled Resolution.
If i set display scale to default & reboot again it works fine. Pls provide fix for this issue.


Regards

Mujib

Oct 14, 2016 5:58 AM in response to BrainSel

I'm sorry to report that the fix did not work for my mid-2010 13" MBP. I tried it twice (although I confess to leaving out the second First Aid step during my first attempt), and the laptop still kept dropping the Bluetooth connection. I even tried erasing the HD and reinstalling Sierra, to no avail. I've gone back to the old version. Thank you for giving us hope by sharing these detailed instructions, though!

Oct 19, 2016 1:50 AM in response to BrainSel

Hi,


I have just tried to install macOS Sierra, after I guess what you could call installing the screen displayed something to the effect of not able to install and press D on start up for diagnosis. I pressed D but nothing.


I tried to enter safe mode but my macbook just starts up in normal mode, when trying to login to my account, black line with white writing appear on the screen with "system up time nanosecond" at the end of all the jargon.


I tried to Pram reset however this leads me to disk Utility, I have first aid all the drives and all check out.


I have no backup of my files, so I need a solution which doesn't entail wiping the hard drive completely.


CAN I BE HELPED, OR AM I DOOMED????


Thanks,

from the guy who has lost all his hair my now 😟

Oct 19, 2016 5:52 AM in response to HamiltonGodfrey

Googling showed many have had similar when trying to install various Mac op system versions. It's some type of kernel panic, I think. Instead of possibly making things worse and risking loss of even more (you don't have a backup), since you have a MacBook, I'd suggest just taking it to a Genius Bar at your nearest Apple Store and let them help you. If I had a MacBook instead of an iMac, I'd probably do that more often instead of losing more hair (we have that in common) trying to fix everything myself.

Problems with macOS Sierra? This fix may help you.

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