Mieke Jonkman said:
Did you already find a solution for your problem? I bought a Crucial M500 240 GB for my Dell D830 and have exactly the same problem.
Same problem here, but I have discovered the reason. When installed in the existing Dell bracket, it doesn't slide ALL the way in. When I remove the SSD from the bracket and just insert the bare drive, it is recognized. Anyone have any experience modifying the bracket to make this work? I'm going to shave the bracket a little and see if I can make it work. I'll let you know.