Hello.
I`ve just started using the intel Galileo and I´m having the same problem about booting from SD card. How do I know if the microSD card that I have is working or not?. Of course mine is not working but I dont know why.
My microSd card is this one:
Kingston 8GB MicroSDHC class 4, has the following marking: N0410-001.A00LF;