I do have 8GB class 10 running fine on Galileo
Hi toxicity967 ;
In the Galileo Gen1 datasheet you will see (page 7) that you can use SD cards of 32GB or less. With the class 10 characteristic you should not have problems. I'm using an 8 GB class 10 in my Galileo Gen 1 and Gen 2 and they are working fine.