CF card suddenly read-only

[eightcore]

Hi,

I recorded a music video yesterday using the ML nightly build of the october 26th. Towards the end, the camera stopped working. Changed ML settings were not saved and at every boot the message "Camera was not shut down cleanly. Skipping module loading." appeared.

Later I've noticed that writing to the CF card (SanDisk Extreme UDMA 7) respectively mutating data is no longer possible. I can't neither format it on my PC nor directly in the camera. When I delete a picture, it's there again after the next boot (same issue on PC). It is completely read-only!

Can anyone help me?

Edit 1: CHKDSK stucks at 0 (zero) percent.

[engardeknave]

Sounds like a hardware failure.

[Markus]

Komputerbay udma 7 cards can become write protected if you put them in certain un-compatible card readers.   

[eightcore]

The card was in the camera when the problem occured, and I don't think that the camera is an 'un-compatible card reader'.