Werner - thanks for your reply. I think I was just confusing myself with old instructions. This morning I used the instructions posted here-
by StudioArkhein, specifically this one:
https://fiddlehack.wordpress.com/2023/07/07/installing-armbian-on-the-orange-pi-5/
and it worked fine. I don't know for sure what I did wrong, but I may have caused the problem by not being patient and shutting off the OPi5 while the Install/Update the bootloader on MTD Flash command was still writing to the mtd. It started working better once I reformatted mtd as explained above. To answer your questions-
Thanks for clarifying that armbian-config is the only script to run.
Cinnamon is working fine, even playing YouTube videos. I had previously used Jammy Gnome, but since the Cinnamon release was shown in the main window of the download page I tried it and liked it.
Its a PCIe NVMe 2230 SSD - I guess the world has moved past TLAs (three letter acronyms) and now I need to use four letter acronyms. 😉
