Save Configuration DSL Embeded
 

I seem to have difficulty saving my configuration in DSL embeded. What really is the correct procedure? Such as so that I don't have to set up my POP3 account every time. When I try to exit it asks me where I want to save it and none of the choices I try to type in does it say are acceptable.

are you booting from cd, usb....
are the choices you type read and writable by the system?

I'm running from on USB. I'm not even sure which options I should be choosing. Obviously I want something that is readable/writable by the DSL embedded system from withing Windows, but I don't know which choice is the correct. I've been trying sdb1, sda1, etc.