big sur ultra long startup time

[zobelaudio]

HI,
I have this crazy long boot time til I get to the login window and have tried everything I could find to fix it. Finally I discovered this software that creates an analysis of your sys. Now I'll post it here and hope that anybody can find the culprit...I can't.
cheers, Stephan

see ETREcheckPRO report

[BobShaw]

Try it with all peripheral cables disconnected.
I had the same problem with Daisy Chained Firewire cables under Mojave but it disappeared under Catalina.
Also check the Console in Utilities for processes that are hanging.

[zobelaudio]

does not make a difference
It seems to be this
Mar 28 13:03:00 Mac-Pro com.apple.xpc.launchd[1] (com.apple.mdworker.shared.0C000000-0200-0000-0000-000000000000[1269]): Service exited due to SIGKILL | sent by mds[104]
which runs multiple times and always gets killed

[Chris Kern]

It seems to be this
Mar 28 13:03:00 Mac-Pro com.apple.xpc.launchd[1] (com.apple.mdworker.shared.0C000000-0200-0000-0000-000000000000[1269]): Service exited due to SIGKILL | sent by mds[104]
which runs multiple times and always gets killed

MDS is a background component of the search indexing capability bundled into MacOS.  You might try rebuilding the search index to see if that resolves the problem.

[zobelaudio]

I have now gone back to Mojave, the original OS of the Mac Pro and updated to BigSur from there.Slowly and cautiously clawing back everything from backups...