I have a Raspberry Pi 1 running Raspbian. I tried running the SD card from it on a Raspberry Pi 3 but it didn't boot.
I've read various things about upgrading a Raspberry Pi 2 (https://docsbay.net/raspberry-pi-quick-start-guide) to run on Raspberry Pi 3, but little for upgrading from 1 to 3.
Can anyone please help?
Thanks