the media check problem

[Satish Balay]

On Sat, 13 Nov 2004, Alan Cox wrote:

> On Sat, Nov 13, 2004 at 07:06:43PM +0100, Dennis Bjorklund wrote:
> > 1) It's the read ahead that causes the problem. If one use
> >    hdparm and set the read ahead to 0 on the device, then I have
> >    no problem to verify a cd using dd.
> 
> Correct
> 
> > Maybe someone like Alan Cox (but not limited to him!) will look at this
> > and say it's stupid, and then I don't need to read the code :-)
> 
> The "end" of a CD-R is undefined for about 150K. ide-scsi correctly 
> retries errors at the disk end and reduces the disk size based on the
> error position. ide-cd doesn't. It's waiting someone who knows enough about
> that area of the block layer to fix it

Alan could you clarify the following?

- (if ide=dma was used for install) after install - removing this
  option from grub will affect media-check only - and all other
  CD operations will work fine?

Thanks,
Satish