If it's gone read-only? Nope. The card will basically refuse any write or erase commands sent to it. (SD cards have a "temporary write protect" and a "perman

If it's gone read-only? Nope. The card will basically refuse any write or erase commands sent to it. (SD cards have a "temporary write protect" and a "permanent write protect" flag -- and you can hope that only the "temporary write protect" flag is the one that got toggled...but I haven't seen that happen with any of my cards so far.)