Hi everyone ! I have a Seagate 7200.11 HDD with the BSY bug (ST31000340AS / SD15), and used the Gradius steps to fix it. Everything was fine - the cable (Nokia CA-42) was adapted, the connections ok, ect. Even the commands were fine: 1º Attempt F3 T>/2 F3 2>Z Spin Down Complete Elapsed Time 0.149 msecs F3 2>U Spin Up Complete Elapsed Time 9.746 secs F3 2>/1 F3 1>N1 F3 1> F3 T>m0,2,2,0,0,0,0,22 Max Wr Retries = 00, Max Rd Retries = 00, Max ECC T-Level = 00, Max Certify Rewr ite Retries = 0000 User Partition Format 5% complete, Zone 00, Pass 00, LBA 00004339, ErrCode 000 User Partition Format 5% complete, Zone 00, Pass 00, LBA 00008DED, ErrCode 000 00080, Elapsed Time 0 mins 10 secs User Partition Format Successful - Elapsed Time 0 mins 10 secs F3 T> 2º Attempt F3 T>/2 F3 2>Z Spin Down Complete Elapsed Time 0.150 msecs F3 2>U Spin Up Complete Elapsed Time 9.723 secs F3 2>/1 F3 1>N1 F3 1>/T F3 T>i4,1,22 F3 T> F3 T>m0,2,2,,,,,22 Max Wr Retries = 00, Max Rd Retries = 00, Max ECC T-Level = 14, Max Certify Rewr ite Retries = 00C8 User Partition Format 5% complete, Zone 00, Pass 00, LBA 00004339, ErrCode 000 User Partition Format 5% complete, Zone 00, Pass 00, LBA 00008DED, ErrCode 000 00080, Elapsed Time 0 mins 10 secs User Partition Format Successful - Elapsed Time 0 mins 10 secs F3 T> But it still not recognized by the BIOS. Any idea what should be missing here? There's any chance that the cable/connections are not set right, even with the hyperterminal commands results ( as presented) ? BTW, I respected closely the suggestions of "timing" and "shutdowns" steps. Thanks