Q: Sierra os update crashes Kernel panic

Can you boot into Safe mode

<http://support.apple.com/kb/ht1564>

If you can post the entire kernel panic report which you will find at:

Kernel Panic reports: Finder -> Go -> Go to Folder -> /Library/Logs/DiagnosticReports

<http://support.apple.com/kb/ht2546>

<http://support.apple.com/en-us/HT200553>

The panic report should have "panic" in the file name.

And in another reply post the output from EtreCheck

<https://discussions.apple.com/docs/DOC-6174> or <http://etrecheck.com>

Reset your NVRAM, and if you've installed some TRIM enabler software, uninstall that.

Your boot args indicates you installed something that disabled kext signing. I would imagine that software is incompatible with Sierra and is causing the panic.

After resetting NVRAM, you may be able to boot into Safe Mode as BobHarris suggested where you may be able to uninstall the software.

How to Reset NVRAM on your Mac - Apple Support

I'm sorry for my english. I'm from Poland. The sierra is serious software error. At el capitan system save after 4 gigabytes per day, and now you can save 50 gigabytes of data. This shortens the lifespan of an SSD. Every day Sierra stores 50 gigabytes of data ... It is a very serious mistake system that will quickly consume ssd drives. update_dyld_shared_cache process save a lot of data on hard drive...

Hi,

Tried all the above, nothing worked. Had to restore to yosemite again from Time Machine.

Can anyone help?

Thanks in advanced.

i have the same problem..spoken to apple about this, and awaiting their response at señor level support. No phones calls returned yet.

I perform fresh installation using USB stick. You can find instruction in google. It went fine, and my mac runs much faster now. The issue is in migration OS X.

best regards

pawel

The same issue here, has anyone found a fix?

I'm having the same problem with my iMac... After update my iMac (With SSD) crashes at te end of the progress bar. Kernel Panic.

Does somebody know how to fix this?

Thx

There is another thread where some have had success creating an external installer and then doing the install from that

<Create a bootable installer for OS X - Apple Support>

Hi, I have a Bootable USB , still the same...

I Had to wipe my hard drive remount it download series.  Have. Blank computer and cannot migrate existing apps. gone back to el cap.  Sierra is a waste of time for me

Had a customer in yesterday with this issue.  It's the Apple installer.  I backed up his user data, reformatted the drive, tried the current Sierra install and it failed.  Then did an install from the original Sierra download and everything went great, See my answer here:  https://www.ifixit.com/Answers/View/343529/App+Store+Problem+download+or+update# answer343540

I had this problem too this morning. Exactly the same problem.

Finally SOLUTION!!!!! That's how I get my macbook pro mid 2012 to work.

1. Remove SSD from MacBook.

2. Connect SSD to another MacBook by using SSD reader.

3. Go to "Recovery .." Folder

4. Delete some software(optional) you don't need and delete razer mouse software(must delete).

5. Put it back and it will install sierra successfull.

I also delete the razer mouse uninstaller

Hi There fellow Mac user's,

Im no expert but I now my way around a mac, and im looking for an easy fix. I think apple should be apple to fix this problem with a new sierra release. Not all user's want to open there mac, or intall all the software licenses and virtual machines a loose hours on a problem Apple should solve.

Is there a simple solution?!

Thanks in advance.