Shared404 nailed one of the issues. I think the top three problems from a time sink perspective were: - unlocking the laptop (knowing an existing password, App

Shared404 nailed one of the issues. I think the top three problems from a time sink perspective were: - unlocking the laptop (knowing an existing password, Apple ID or firmware password). Probably 3 in 10 laptops are non-trivial. I have 5 laptops with unknown firmware passwords that I am planning on removing the SPI flash on to wipe out the password (just for funsies... seems like an interesting challenge!) - upgrading to Catalina via USB installation image. If the OS image is jumping several versions (or actually being downgraded from a security patch release), here be dragons. Typically the USB installer pulls down another installer via Wi-Fi and then has to perform a random "this disk needs an upgrade" routine which 50% of the time results in bad thing happening and I'd be left with the flashing question mark. Then its time to start over again. - After installing and setting up Catalina (so I can smoke test the functionality), I'd wipe the disk and reinstall from USB one last time so it was fresh. Randomly, the re-install would fail in a mysterious way and I'd have to go around a third time.