I have Big Sure Dev Beta 1 installed on an external USB-C SSD drive. Mac is a brand new 2018 Mac mini (most recent Intel model). Beta 1 works fine (well, for the purpose of beta testing anyway
Big Sur Dev Beta #2 is out now. Software Update GUI Pane and CLI both see the new update, but I'm unable to downed/install it.
Here is the error I see from running 'softwareupdate -d -a' from Terminal:
'Failed to download & prepare update: Error Domain=SUMacControllerError Code=7722 "[SUMacControllerErrorPreflightPrerequisiteCheckFailed=7722] Failed to perform PreflightPrerequisite operation: com.apple.MobileSoftwareUpdate.preflight.error(Preflight):MSUPreflightErrorTargetIsNotSnapshotBooted(6) | The volume can not be used because it is not snapshot booted.'
Big Sur Dev Beta #2 is out now. Software Update GUI Pane and CLI both see the new update, but I'm unable to downed/install it.
Here is the error I see from running 'softwareupdate -d -a' from Terminal:
'Failed to download & prepare update: Error Domain=SUMacControllerError Code=7722 "[SUMacControllerErrorPreflightPrerequisiteCheckFailed=7722] Failed to perform PreflightPrerequisite operation: com.apple.MobileSoftwareUpdate.preflight.error(Preflight):MSUPreflightErrorTargetIsNotSnapshotBooted(6) | The volume can not be used because it is not snapshot booted.'