WiFi Dongle for second WiFi device

[Paul M]

Thanks, youve been doing lots of diagnosis for me. Now I need to do some more work.

I have two 8G R PI 4B's (one for home and one for the boat).
I've now done some tests on both with some different SD cards and both the V2 headless and the V2 starter images.
Results are the same on all combinations so far.
Headless cannot seem access the .Config (as before)
Starter allows the config to be modified but does not enumerate the second wireless interface (need to test this further)
I've repeated the downloads of the image but the common parts of my process that I'll try to eliminate are

I use the Raspberry Pi Imager to burn the images to microSD card, I don't do any specific formatting (I assume FAT32 is what is needed?) - I will try formatting first before imaging.
I only have the R Pi 4B 8GB (times 2) to test.
I have an ethernet cable plugged in so the ethernet port is active, I'll try without this.

I'll try lsusb -v and ifconfig and compare my results.

I have a Ralink wifi dongle on order and should be able to test next week.
note to self: be more methodical!