well,, i have not visited both of these places....
but sure enough u can reach there via deosai
just before the shoesar lake coming from sadpara, there is a rearly used jeep track towards right side if i am not forgetting leading to deosai, than murtaza choki and than minimarg...
make it confirm before going coz i persoanlly have not been there,,, but heard it is so...and seen that track going to chota deosai