27
Sep

FAIL Servo Op=00DF Resp=0007 and Seagate hDD Head Failure

News & Tips

FAIL Servo Op=00DF Resp=0007 is very common terminal error message for Seagate physical damaged hard drives. If this error keeps coming like below and never enter F3 T>, it is definitely head damage.

Boot 0x80M
FAIL Servo Op=0100 Resp=0003

0100 0000 0000 0001 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
ResponseFrame 16C0 007C 0820 1940 0008 0000 0000 0000 0B74 0000 0000 0000 0000 0000 0000 0B61 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0003 Loop=007F

Motor started
Heads loaded
FAIL Servo Op=00DF Resp=0007

00DF 0000 0001 0005 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
ResponseFrame 1E74 478A FFFE 0002 0000 D4F2 007C FFC6 0000 0001 0000 0000 0000 0000 0000 0B61 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0003
FAIL Servo Op=0095 Resp=0007

0095 70B6 0004 7FFF 7FFF 7FFF 0000 0003 0000 0000 8000 0000 FFFF 0000 0000 0000 0000 0000 0000 0000 0000 61B0 6666 A000 0000 0000 0000 0000 0000 0000 0000 0000
ResponseFrame 0002 0001 0001 DA6D 0000 D4F2 007C FFC6 0000 0001 0000 0000 0000 0000 0000 0B61 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 FFFF Loop=2247

FAIL Servo Op=0095 Resp=0007

0095 70B6 0004 7FFF 7FFF 7FFF 0000 0003 0000 0000 8000 0000 FFFF 0000 0000 0000 0000 0000 0000 0000 0000 61B0 6666 A000 0000 0000 0000 0000 0000 0000 0000 0000
ResponseFrame 0002 0001 0001 DC9D 0000 D4F2 007C FFC6 0000 0001 0000 0000 0000 0000 0000 0B61 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 FFFF Loop=2247

FAIL Servo Op=0095 Resp=0007

But sometimes, above error FAIL Servo Op=0095 Resp=0007 or similar appear once with some other messages and enter F3 T>, this can be firmware issue too, sometimes weak head issue and users need to use HDD firmware repair tools to diagnose further such as unlock, SYS file read and write, etc.

For physical head damage issue, users must find donor drives, open the patient hard drives in clean room environment and then swap the heads by professional head and platter swap tools to continue. Please note: before swapping the heads, please watch carefully the air filter, the surface situation to make sure there’s no platter scratches. If there’re already many scratches on the platter, no need to swap heads and wasted the whole donor.

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