Recovering Photos from a Hard Drive

Hi
The Mobo in my Acer laptop has died. I’ve removed the hard drive and put it in a caddy. When I connect it to the wifes laptop via usb I can see the ‘new drive’ it shows as having 2 partitions like 2 separate drives. One has all the programs on it and the other data.
I can access the programs but not the data I presume the photos I want are in the data partition. What do I have to do to open these.
Regards