Hard disk keeps turning off or disconnecting?

[Gilles Gravier]

On 12/08/2012 21:22, Gilles Gravier wrote:
> Hi!
>
> On 12/08/2012 21:19, Felix Miata wrote:
>> On 2012/08/12 21:13 (GMT+0200) Gilles Gravier composed:
>>
>>> And of course, on WD's site, there is information on how to turn of
>>> power management for a disk on Windows 7 :
>>> http://wdc.custhelp.com/app/answers/detail/search/1/a_id/3875/c/130/p/228,219,289
>>>
>>> So... how do I do that on Ubuntu? :)
>> hdparm
> Just starting to read on hdparm. Seems the settings get reset on change
> of power mode (i.e. going from mains to UPS, for exemple)?
>
> Gilles

And...

sudo hdparm -B 255 /dev/sdb

/dev/sdb:
 setting Advanced Power Management level to disabled
 HDIO_DRIVE_CMD failed: Invalid argument
 APM_level    = not supported

So... not sure it's working...

Gilles.