High Sierra won't install. Error message reads "An error occurred while verifying firmware"
@rust.kurchenko,
I had the same issues with MacOS 10.12.6 > 10.13/10.13.1 and tried every install option Google and I could come up with...Recovery/USB/App Store install attempts which failed. Apple Support lead me down the road to disk repair.
The firmware can't be verified because the EFI partition is corrupt. And DiskUtil will not fix unless run from Recovery Mode.
Ultimately, I had issues with the EFI partition on my main drive Volume (third party SSD).
I solved it by running diskutil from command line in Recovery mode against my main startup Volume.
Caution using diskutil from command line (create a backup first).
Boot from OS X recovery by holding CMD + R at the time of startup.
Once booted from OS X recovery, from MacOS Utilities app, choose Utilities > Terminal
From here, there are four steps to enter/run from Terminal's command line. I've listed the commands to execute below each step, below:
-Step 1 (from this list, find the name of your main start up drive (e.g. /dev/disk0)):
diskutil list
-Step 2 (feedback will show errors)
diskutil verifyDisk /dev/disk0
-Step 3 (which should fix the errors)
diskutil repairDisk /dev/disk0
-Step 4 (verify repair worked):
diskutil verifyVolume disk0
From here, I booted back to my Start Up drive (running Sierra 10.12.6) and launched the 10.13.1 installer file in my /Application folder. Upgrade from 10.12.6 to 10.13.1 took ~45 minutes.
DON'T instal it. There are far too many bugs and problems with it. Scroll through the dozens of pages of different problems. This has been a badly prepared and thought out upgrade.
I have the same issue and this is my info. I have also tried to download and update at less 4 times. I have been running my Mac on this external SSD drive for the last 3 years and have never had any issue with upgrading my Mac OS tell now.
Had this problem, second partition on main hard drive 1 Tb. Deleted the second partition and again tried installing update. Failed again.
Time to give up and allow Apple time to investigate and hopefully come up with a working solution.
I have the same problem.
Here is my system info:
I have tried several approaches to resolve it but all of them were unsuccessfully, every time I see the same error:
Hey, Peter.
Thanks for the reply.
Yeh, the point is that I just bought this iMac and I want to migrate my MacBook settings/apps to start work on iMac.
And it is really annoying that I have to wait after I spent big amount of money to buy this machine.
But anyway, thank you for your info, I guess I have tried everything to resolve that and the last option is just wait 😟
I have the same problem. I have a 13" MacBook Pro 2015 model. I have tried several times to install and I get this same error.... Please help...
same here..
Same here and here:
Have the same problem. I am running the 1 TB Fusion HDD (original equipment). Tried install 3 times. Downloaded a new install file twice.
Same problem with installing High Sierra on MacBook Pro 15" Mid 2010 fitted with aftermarket SSD (Crucial 500GB)
Thank you for the info! I have been needing an excuse to buy a new iMac anyway LOL.
Worked for me as well. 🙂
Peter, try the steps in my post. It’s an EFI partition issue not a user partition issue.
Same issue here. Original MB Pro with correct system requirements for HighSierra.
Hey Tim!
Could you list detailed steps to go thru?
I deleted/erased internal HD and installed Sierra there. Then I tried to install upgrade and got the same error.
High Sierra won't install. Error message "an error occurred while verifying firmware"
