Comment 33 for bug 1222313

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chris (ign-christian) wrote :

Hope that I did what is expected. Those are the results:

sudo hdparm -C /dev/sdb1:
/dev/sdb1:
 drive state is: unknown

sudo hdparm -B 255 /dev/sdb1: (execute after HDD wake up since previous command show result together with wake up process)
/dev/sdb1:
 setting Advanced Power Management level to disabled
 HDIO_DRIVE_CMD failed: Invalid argument
 APM_level = off