I'm trying to update to Monterey on Mac Pro (trash can looking like version) and download goes ok, setup wizard goes ok and just when wizard says to restart your device for setup to continue, it will say prepping then application crashes. I did install all the previous updates for Big Sur prior to trying upgrading to Monterey. Here is the log, I'm not sure what to do right now:
Mac Pro
Do you have an Apple SSD installed? I ask because I had problem with upgrading late 2013 MP to Monterey.
A while ago I replace the internal Apple SSD with an NVMe drive with adapter in my late 2013 MP. I successfully updated to Big Sur with no problem but could not update to Monterey and received same error you did. Could not even install Monterey on a blank external drive. Then I Googled and it appeared that an Apple internal SSD has to be installed in order to update the firmware and OS boot loader. I installed the original Apple SSD which had Mojave and updated successfully to Monterey. I then booted from my Big Sur NVMe SSD and successfully updated to Monterey. I am typing this from that OS now.
Do you have an Apple SSD installed? I ask because I had problem with upgrading late 2013 MP to Monterey.
A while ago I replace the internal Apple SSD with an NVMe drive with adapter in my late 2013 MP. I successfully updated to Big Sur with no problem but could not update to Monterey and received same error you did. Could not even install Monterey on a blank external drive. Then I Googled and it appeared that an Apple internal SSD has to be installed in order to update the firmware and OS boot loader. I installed the original Apple SSD which had Mojave and updated successfully to Monterey. I then booted from my Big Sur NVMe SSD and successfully updated to Monterey. I am typing this from that OS now.
You might be correct, yes I did upgrade my SSD in Mac Pro a long time ago with a bigger SSD. So now the problem is that I don't think I can locate my original SSD that Mac Pro came with, I think I might have reused it somewhere. If this is the case, Appel should fix this and Mac Pros are supposed to be devices that we can upgrade stuff in them etc. so something like this should not prevent us from upgrading to the latest mac OS.
Maybe Apple will fix in a subsequent Monterey update and thus you can try again.
The pins/notch is different in the Apple SSD than a NVMe SSD so it may not fit in a device that uses an NVMe SSD. I would try to find it or borrow one. The Apple SSB has a plastic heatsink attached so it is easy to tell it from others.
Some good news, I found the original SSD, followed your steps and I'm now on macOS Monterey. Thank you for the solution and for taking the time to answer my post.
macOS Monterey Setup crashes
