i've been cracking at this (the BSY) fix for the past few days, and i can only get as far as passing the loopback test. when i plug in the rx, tx, and sata power to the drive, the only feedback i recieve after hitting ctrl + Z is a random character, instead of the prompt. when i throw the ground wire into the drive, i get nothing from the ctrl +z command. i've tried using two power supplies (the 5v psu, and a 3v battery), swapping the rx-tx lines, and grounding everything in sight. i've lightly browsed this thread to see if anyone else had this problem, and just can't figure out what i'm missing. any tips?