mount BB black filesystem

Hi there,
I’ve got a beagle board and I’m trying to recover it without zapping the inbuilt disk it has. I hoped that I could burn an image boot up and mount the filesystem. I tried burning an image to a mini SD card but it won’t boot but I’ve tested this in another brand new beagle board. I’m just wondering do I need to press any buttons or do anything else on the beagle board to get it to boot of the SD card? The board still works and if I take the SD card out it boots with its current software I just can’t get into it. Wondering if I have the right image also? any help appreciated!

IMG_1626

Cheers,
Neil.