Re: Slowing down CDROM drives (was: Re: ATAPI CDRW which doesn't work)

From: Andre Hedrick (
Date: Mon Feb 05 2001 - 19:23:44 EST

On Mon, 5 Feb 2001, Rogerio Brito wrote:

> On Feb 05 2001, Jens Axboe wrote:
> > ioctl(cd_fd, CDROM_SELECT_SPEED, speed);
> I'd like to thank everybody that replied either on the list
> and privately. I didn't know that I could just use the /proc
> entries to change the IDE driver speed with a simple:
> echo current_speed:4 > /proc/ide/hdc/settings

You can not it has nothing to do with the speed of the device but the
transfer rate between the host and the device.

Andre Hedrick
Linux ATA Development
ASL Kernel Development
ASL, Inc. Toll free: 1-877-ASL-3535
1757 Houret Court Fax: 1-408-941-2071
Milpitas, CA 95035 Web:

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