I have a 8GB Sandisk SD that I have used successfully for all sorts of things. Now I'm trying to prep it for an Install device for Windows 7 or 8 or whatever, and for some reason the Windows 7 Utility cannot write to it. I checked the physical lock, reformatted it to Fat 32 and retried, with same result. I'm guessing there is something on there that I cannot see that is trouble. within the tool menu I can access the device, find the .iso, run it, but it fails saying "cannot write to this device".
how to fix?