Re: [Dvdrtools-users] cdread: Read-only file system

[Larry Siden]

I tried exactly what you suggested: "dd if=/dev/hdc of=myfile.iso
conv=noerror".  One disk it just kept printing "dd: reading
`/dev/hdc': Input/output error" and trying the same blocks over and
over again.  Another disk it read worked flawlessly.  I looked at the
first disk and didn't see any scratches.  It plays flawlessly on our
PS2.  Is there something about it's encoding or layout that makes it
different?


On Tue, 22 Feb 2005 20:09:40 -0500, Sean Johnson <address@hidden> wrote:
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> Andre Dalle wrote:
> | I've never used cdread.  If you simply want to capture the image of
> | the disk, "dd" will do the job.
> |
> | dd if=/dev/hdc of=image.iso
> |
> | Note if there is a bad sector on the disk that can't be read dd will
> | stop at that point and you'll get an incomplete image.
> |
> 
> If you use the conv=noerror, dd will try to pass over the unreadable
> sectors. This still might lead to an incomplete image, but I've used to
> pull data from a damaged disc that wouldn't have been obtainable otherwise.
> 
> Just my 2c.
> 
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-- 
Larry Siden
http://umich.edu/~lsiden/