ST96812AS

[patroclo]

Hello everybody,

I have 3 ST96812AS all of them knocking at the spin up.

Can anyone explain me the differences between these 3 logs?

DRIVE 1

Interface task reset
4096k x 16 buffer detected
MERC2 - 1_Disk 0.05 03
Buzz - -17-06 15:55
Head Mask 01,01 - Switch to full int.
Spin Ready
Dwell Cyl - 084F/0214/0256
(P)$Head Mask FFFF - Head Mask FFFF - Head Mask FFFF - Head Mask FFFF

DRIVE 2

Interface task reset
4096k x 16 buffer detected
MERC2 - 1_Disk 0.02 12-
Buzz - 22-05 16:43
Head Mask 03,01 - Head Mask 03,05 - Switch to full int.
Spin Ready
Dwell Cyl - 0A4D/05A3/0644
(P)$Head Mask FFFF - Head Mask FFFF - Head Mask FFFF - Head Mask FFFF


DRIVE 3

Interface task reset
4096k x 16 buffer detected
MERC2 - 1_Disk 0.02 05-
Buzz - 08-06 15:10
Head Mask 03,01 - Head Mask 03,05 - Head Mask 03,06 - Head Mask 03,07 - Head Mask 03,08 - Head Mask 03,09 - Head Mask 03,0A - Head Mask 03,0B - Head Mask 03,0C - Head Mask 03,0D -

Thank you in advance!

[AJ2008]

All represent failure to initialise head mask, heads are defective in all 3 disks.

I do not know exactly the difference, maybe different revisions of the same HDD initialise Head Mask differently? Or else maybe head map is different on last disk?

[ZeBong]

yes look like head failure, try to change it and see what happen.