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
