I'm using quietHDD and/or hdparm to disable APM on my very clicky Hitachi hard drives (to stop the disk heads from parking).

The program supposedly only needs to be run at boot time and after power cycles such as standby/sleep. However, in my case it seems to only work for short periods at a time before the clicking returns and I have to run quietHDD or hdparm again.

Is there a way to permanently edit the drives' settings so APM is completedly disabled for the life of the drive?


Yes, you can use the Hitachi Feature Tool, if it works with your drive. But there is no information whether your warranty will still be valid after changing the APM value. That's why I asked my question about the warranty here and found your question accidentally.

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