DSL Embedded :: Won't read

Okay, I am able to boot up from the usb pen drive. Then it loads dsl into the ram and I can use dsl. Well I check and see if i can find my usb pen drive so i could try saving a simple test file. Just so I could see it works. Can't find the pen drive. I look down the light isn't blinking. So i take it out, nothing happens. I put it back in and I am able to see it from like this external device checker thing but not from the file menu.

Any simple steps I should take to save files onto my usb pen drive.

You'll have to mount a partition on your drive first...

original here.