[Techtalk] Input/Output Error when reading from CD-RW

[Hamster]

On Fri, 31 Oct 2003 11:28:04 -0500
TechChiq <techchiq at hotpop.com> wrote:

> > I'd be curious to see what happens if you after you mount the cd and you
> > try doing a "raw" copy using dd. Something like dd if=/dev/cdrom 
> > of=~/cd.iso
> 
> Ok, I just tried it. Here's what it did:
> 
> dd: reading `/dev/cdrom': Input/output error
> 104+0 records in
> 104+0 records out


There's something weird going on here. Youre getting the error, but the
records in/out business is usually what you get when it succeeds! But the
140 records is a very low number. It doesnt look like it was able to copy
much at all :(

Do you still have the output file? The cd.iso? You can mount that and have a
look inside it (mount -o loop cd.iso /mnt/)

Hamster



















> Odd. I remember there was a disk zapper in DOS one time a looooong time 
> ago that would take a floppy or hard drive, and display the actual bytes 
> on all the sectors/tracks and let you export them. It was a good disk 
> snooper. I wish there was a linux version that worked like that for CD-RWs
> 
> because then I could just grab stuff and/or even see if it's all there...
> 
> This really upsets me. Those pictures were kinda one-of-a-kind. And, this 
> is the SECOND time I lost my boyfriend's pictures! :( The first time I 
> reinstalled thinking I had them on CD and didn't.
> 
> Oh well, live and learn. But I just feel that the actual files are in 
> there, just that the CD-RW drive isn't reading them. I wish I had another 
> drive handy to read it. Don't know of anyone that would let me use their 
> computer though other than my BF and he's like on the third floor of his 
> apartment (I'm in an upper myself) no elevators in either building and 
> he's a few miles away. So lugging an old Gateway 2000 machine is like a 
> huge task. LOL!
> 
> I'll keep trying things and let you know if there's any progress....
> 
> TechChiq
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