WD2002FAEX disable Power Management and APM under FreeBSD

I want to deactivate the power management of the WD Caviar Black (2TB)

I have tried both hex code
“EF C2 00 00 00 00 00 00 00 00 00 00”
and

EF 85 00 00 00 00 00 00 00 00 00 00
But they don’t seem to work. Any other Ideas?

root> /sbin/camcontrol cmd ada4 -a “EF 85 00 00 00 00 00 00 00 00 00 00” -v

camcontrol: error sending command

(pass4:mvsch3:0:0:0): SETFEATURES. ACB: ef 85 00 00 00 00 00 00 00 00 00 00

(pass4:mvsch3:0:0:0): CAM status: ATA Status Error

(pass4:mvsch3:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 04 (ABRT )

(pass4:mvsch3:0:0:0): RES: 51 04 00 00 00 00 00 00 00 00 00

root> /sbin/camcontrol cmd ada4 -a “EF C2 00 00 00 00 00 00 00 00 00 00” -v

camcontrol: error sending command

(pass4:mvsch3:0:0:0): SETFEATURES. ACB: ef c2 00 00 00 00 00 00 00 00 00 00

(pass4:mvsch3:0:0:0): CAM status: ATA Status Error

(pass4:mvsch3:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 04 (ABRT )

(pass4:mvsch3:0:0:0): RES: 51 04 00 00 00 00 00 00 00 00 00

Don’t know if that is possible, would it be the same thing if you do it from the windows control panel? Check the link below.

http://wdc.custhelp.com/app/answers/detail/a_id/295/session/L2F2LzEvc25vLzEvdGltZS8xMzUyMjM1NTA1L3NpZC9CRzFJVENhbA%3D%3D

Unfortunately I cannot remove them from the server.

All I need to do is to disable “Power Management” on that disk somehow.

@Alucardx23: Thanks anyway for suggesting