Thanks for your continued suggestions, Bob. Having taken the ZS-M7 casing apart, I can see the shutter is clear (and moves correctly) and that the disc is in the correct orientation (going on location of write protect slide) and from the motor noise it sounds as if the disc is spinning constantly. There is a small circular hole on the righthand side of the shutter, but inserting an unfolded paperclip doesn't trigger the auto loading mechanism to eject the MD (do you know if it should?) and although I can get a screwdriver into the slot I'm not sure how to encourage the mechanism to release the MD from the motor. Is there a mechanical release that I need to press inside the slot? Cheers Owen