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How to slow down USB connected cd/dvd?

This is a discussion on How to slow down USB connected cd/dvd? within the Slackware Linux Support forums, part of the Unix Operating Systems category; --> This is kind of complex configuration. Pcmcia > usb 2 > ide > dvd 5.25 drive. I write cd, ...


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  #1 (permalink)  
Old 02-20-2008, 09:03 PM
korgman
 
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Default How to slow down USB connected cd/dvd?

This is kind of complex configuration.

Pcmcia > usb 2 > ide > dvd 5.25 drive.

I write cd, dvd but I cannot spin down (lower speed) the device
in reading.

Compiled setcd-1.5 from debian, I get info from the drive,
but still is in fast mode.

I also have sdparm, suppose that hdparm is useless in usb
devices. USB connected devices are treated like scsi, right?

--
Please excuse my english writing!
Slackware 11
Knowledge report: One year, still plenty to learn
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  #2 (permalink)  
Old 02-20-2008, 09:04 PM
rusty_dm
 
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Default Re: How to slow down USB connected cd/dvd?

> This is kind of complex configuration.
>
> Pcmcia > usb 2 > ide > dvd 5.25 drive.
>
> I write cd, dvd but I cannot spin down (lower speed) the device
> in reading.
>
> Compiled setcd-1.5 from debian, I get info from the drive,
> but still is in fast mode.
>
> I also have sdparm, suppose that hdparm is useless in usb
> devices. USB connected devices are treated like scsi, right?


readcd dev=/dev/sr0 sectors=0-1 speed=4
try
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  #3 (permalink)  
Old 02-20-2008, 09:04 PM
korgman
 
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Default Re: How to slow down USB connected cd/dvd?

On 2007-02-20, rusty_dm <ru@mail.rusty_dm> wrote:
> readcd dev=/dev/sr0 sectors=0-1 speed=4
> try

Thank you for the effort.

I confused by this command.

Fist of all, it does not change the speed, second: this command reaad
sectors.

I don't want this, the drive operates with another program so I only
want to change the speed. Unless you suggested to read only 1 sector
to initialize the drive to new speed.

--
Please excuse my english writing!
Slackware 11
Knowledge report: One year, still plenty to learn
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  #4 (permalink)  
Old 02-20-2008, 09:04 PM
korgman
 
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Default Re: How to slow down USB connected cd/dvd?

On 2007-02-20, korgman <korgie@gmail.com> wrote:
> Fist of all, it does not change the speed, second: this command reaad
> sectors.


I was wrong. IT'S OK! Thank you.

(Weird method, but who cares?)

--
Please excuse my english writing!
Slackware 11
Knowledge report: One year, still plenty to learn
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