Can't turn off Read-only

Hi I hope I've posted this in the correct forum. XBMC (my htpc software) can not write changes to secondary drive as when I turn off Read-Only it automatically turns back on again. Attachment 16615 (http://www.eightforums.com/attachments/f1/f2/16615-cant-turn-off-read-only-untitled.jpg) I can give further information but i didn't want to swap you guys with details unless they are needed, but just in case it is...