You see, when I was pasting my patched pokemon white onto the card, it stopped and said that it was connected to a wrong diskette so I cancelled it, safely removed it, then plugged it back in. Now after I've done that, it says that the Disk needs to be formatted, so when I formatted it, the pc said it couldn't. I took it out and checked if the Micro SD was working on the flashcart, it worked so I tried plugging it into the computer again, but still the same problem! It says that I don't have any disk plugged in!
good chance if the micro sd still works but the usb stick doesnt then i think ur usb is haywired(i think thats the right way to say it) like water on electricity it goes (......) that word for your usb ~~dark saiyan~~
Unfortunately the microsd readers supplied with flashcarts are often very cheap, poor quality models that have a tendency to fail. All you can do is replace the reader.