2

I am helping a friend install MacOS onto her MacbookPro14,1 2017. She purchased it new and it has had no modifications.

The disk has been reformatted and from the Disk Utility in Recovery Mode looks fine. I have attempted to install from (Cmd+R) Recovery Mode via internet and an install USB. Both processes start as per normal and then proceed to what I guess is copying resources to the local drive, which takes about 10 minutes, but fails at the end with the below:

storeassetd[560]: SUAppStoreUpdateController: XPC error in __77-[SUAppStoreUpdateController _queryForAvailableUpdatesWithCompletionHandler:]_block_invoke (error domain=NZCocoaErrorDomain code=4999 "The connection to service named com.apple.softwareupdated was invalidated)...
...
osinstallersetupd[578]: No native mechanism to verify InstallESD.dmg
osinstallersetupd[578]: Operation queue succeeded 
osinstallersetupd[582]: Couldn't mount base system dmg! (error code: 110)
osinstallersetupd[582]: IATOOL: Failed to mount outer DMG

Any help would be much appreciated.

Improve this question
1
  • 1
    I had the same problem on a 2016 MacBook Pro, and succeeded by instead: pressing Cmd + Option + R, then installing. The Cmd+R would try to install Sierra, which failed 3 times. The Cmd + Option + R would install High Sierra instead, which worked on first try.
    – spirit
    Commented Mar 27, 2023 at 16:45

1 Answer 1

Reset to default
2

This is the best answer. Per the above. CMD+R will download and install macOS Sierra does not allow format of drive with APFS and will error with error 110. Unable to mount dmg.

CMD+OPTION+R will download and install macOS Monterey and will allow format with APFS and other formats.

Improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .