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Date: Sun, 11 Feb 2001 12:21:43 -0800 (PST)
From: Alan Olsen <alan@clueserver.org>
To: Jens Axboe <axboe@suse.de>
Cc: Pavel Machek <pavel@suse.cz>, linux-kernel@vger.kernel.org,
        Rogerio Brito <rbrito@iname.com>
Subject: Re: Slowing down CDROM drives (was: Re: ATAPI CDRW which doesn't
 work)
In-Reply-To: <20010211174707.I16362@suse.de>
Message-ID: <Pine.LNX.4.10.10102111220160.22754-100000@clueserver.org>
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On Sun, 11 Feb 2001, Jens Axboe wrote:

> On Sat, Feb 10 2001, Pavel Machek wrote:
> > > 	ioctl(cd_fd, CDROM_SELECT_SPEED, speed);
> > 
> > Does this actually work? I helped my friend with partly broken cdrom
> > (worked only at low speeds) and it did not have much effect. It did
> > not make my cdrom quiet, either, AFAI can remember.
> 
> It's no news that vendors only implement what they want to. New
> cd-r/w and dvd drives are not required to implement this command,
> so it may not work there either.

Take a look at the code for cdparanoia or one of the other MP3 ripping
programms. Slowing down the drive is a standard feature for that type of
program.  (Reduces errors when pulling audio tracks off the disc.)

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