Install macOS 11 Beta 3 fails

Question

Created Jul ’20

Replies 5

Boosts 0

Views 1.5k

Participants 5

Hi all

currently installed: 10.15.6, Apple MacBook Pro Late 2018, 32GB

Just downloaded the Big Sur Beta 11. When trying to install, it stops with 10 minutes left (tried couple fo times) only with the Error: An error occurred installing macOS. You can try again to complete the installation.

Only thing I can find in Console at this point is:

Operations failed with error: Error Domain=BOSErrorDomain Code=204 "An error occurred during preflight." UserInfo={NSLocalizedDescription=An error occurred during preflight., UpdateBundleIdentifier=com.apple.bridgeOSCustomer, NSUnderlyingError=0x7fa226e098b0 {Error Domain=BridgeOSSoftwareUpdateError Code=19 "MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);" UserInfo={SystemPartitionSize=1979666432, MSUErrorCode=37, MSUErrorDescription=FCRT migration failed., NSLocalizedDescription=MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);}}}

I also tried creating an external media, but booting from this one also fails with an error telling me that the disk needs an upgrade which doesn't work when I click on Update.

Network: Had ethernet and Wifi, also tried only with WiFi. same Problem.

Any ideas what I can try next?

thanks

Boost

Answer 1

f0rd42 OP

Jul ’20

As an update. I also already tried installing as a new user and in safe mode, always the same issue.

0

Answer 2

liuzijian OP

Jul ’20

This may be an Apple developer bug, I also tried a Beta 3 install today and had the same problem as you.

1

Answer 3

RobRob17 OP

Jul ’20

Having the same issue on a 2018 MBP :( Tried a lot of time and even wiped to a clean 10.15.6 install and tried upgrading again with no luck.

0

Answer 4

ehemmete OP

Jul ’20

I was seeing the same problem on a 2018 MacBook Air. I used Apple Configurator 2 on another Catalina system to Revive Device (Action->Advanced->Revive Device). After that, the Big Sur beta 3 install started.

0

Answer 5

skylarmb OP

Aug ’20

Same error here on a 2018 MacBook Air.

Code Block Aug	5 21:29:06 Skylars-Air osinstallersetupd[573]: bridgeOS update prepare failed: Error Domain=BOSErrorDomain Code=204 "An error occurred during preflight." UserInfo={NSLocalizedDescription=An error occurred during preflight., UpdateBundleIdentifier=com.apple.bridgeOSCustomer, NSUnderlyingError=0x7fc702334880 {Error Domain=BridgeOSSoftwareUpdateError Code=19 "MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);" UserInfo={SystemPartitionSize=1979666432, MSUErrorCode=37, MSUErrorDescription=FCRT migration failed., NSLocalizedDescription=MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);}}}

1