I have just bought a R Pi 3B+, on which I am running the latest NOOBS.
I bought it to run some specific software, which I have now managed to get set up and working on a 32Gb card. The only other suitably large card I have is a 16Gb, onto which I would like to write a backup copy.
I have tried to use Win32DiskImager, but that complains that is cannot copy from the 32 to 16Gb.
I also have an old usb mobile dongle, which has a built in SD Card slot. That just seems to want to install its mobile software - without access to the 16Gb card.
What to try next please?