Option-booting not working

RPS

Registered
Hi, if I go to startup-disk and all, it works just great. I can switch between 10.1.0 and 9.2.2 prefectly. But I heard if you press -option- while rebooting, you can choose wheter to start up in 9 or 10. Well if I do that, I get the HD icon with an X in the bottom right corner. I also get an arrow-button to the right of that icon, and a refresh button(at least that's what I think it is) on the left. But when I try refresh ( I thought it would just change the HD icon to 9) the X icon appears again. So if I rebooted from 9, the 9 icon stays, and the same with 10. Dd I do something wrong?:(
 
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