ubuntu-server 7.10, what might be preventing my USB drive from sleeping?

[Bart Silverstrim]

Karl Larsen wrote:
> Bart Silverstrim wrote:
>> Karl Larsen wrote:
>>
>>   
>>>     I have a hard drive that I connect to my Ubuntu using a USB cable. I 
>>> works fine and I reach it at /media/disk/. What keeps it running is a 
>>> power supply. The HD will run until I turn it off with a switch.
>>>
>>>     So I don't understand your problem :-)
>>>     
>> The drive should be powering down when it's not in use for an extended 
>> period of time. 
>     I am an Electrical Engineer and thus are simple minded. A box full 
> of timers and relays to turn on and off 12 volts when needed will be 
> expensive and not mass produced.
> 
>     So please tell us what make and model controller your using with 
> your VERY special external Hard Drive.

What are you talking about?  Your reply makes it sound like I'm making 
this stuff up.  Maybe I'm completely misinterpreting what you're 
posting, but from the tone I don't think I'm going to spend time looking 
up resources for you...

If you really don't know what I'm talking about with hard drives 
spinning down to save power, use google or try "man hdparm" and look for 
  more information on -C, -B, -S, -y, -Y, and -Z flags.