Warning !!! 1214

Hello everyone, I bought a 320GB HDD for Xbox 360 first generation. After trying several times to transfer my data from one hard drive to another (with transfer cable) without success (only 32GB been detected as a key) I tried to connect it to my computer, and there; fatal error, never make the program compatible xbox hard drive has changed reverse automatiquement.opération almost impossible except for a computer.
a little later, I'll blow the warranty by changing the shell of the hard drive.
So to summarize: Do not make like me and stay calm, do not Try plugging your computer and do not open the shell.
For my part I am going to buy a disc "OFFICIAL" Microsoft in a real store. Yes, yes, I have too many sub !!