removing write protection from transflash, micro sd cards
There seems to be an issue here thats not being resolved. Many out there clearly have a problem with removing write protection. They are not idiots. Unfortunately some people giving advice are not very good listeners. so for you in particular Id like to state the facts.
Unchecking read only, though cute, does not work
Downloading to hd is another cul-de-sak
And the most obvious suggestion, unlock sd card, is obvious.
So whats the problem, well its most likely that the write protection message is in fact a smoke screen to hide the fact that your card reader is at fault, alot of multi card readers seem to be the problem, other than that there really is very little else that can go wrong. Swap card readers and find out.