backup a write-protected CD in Linux

[Vinicius]

Em Sáb, 2004-09-25 às 23:21, Shawn Milo escreveu:
> YigalB wrote:
> 
> > I have a game which my kids love very much, run on XP. The company 
> > which made this CD is no longer alive, and the CD starts to be in bed 
> > shape – so I must back it up – the sooner is better.
> >
> > Is there a SW to do it under Fedora core? I know some utils under XP 
> > (clone CD, Nero etc).
> >
> > Oh yea – one more thing – the CD is protected – I guess it has some 
> > “bad sectors” or similar.
> >
> > Thanks
> >
> > Yigal
> >
> 
> I suggest trying dd. It is a simple command-line utility which will copy
> a file byte by byte, and will not be fooled by "bad sector" problems.
> 
> Syntax: dd bs=32 if=/dev/hdb of=/home/yourname/file.iso
> 
> The "bs=32" tells it to read in 32 bytes and write out 32 bytes, 
> regardless of
> the junk in those bytes. This will even allow you to make copies of 
> filesystems
> your system does not understand.
> 
> Shawn
> 

"$ dd bs=32 if=/dev/cdrom1 of=FS2004_4.iso
dd: lendo `/dev/cdrom1': Erro de entrada/saída
48384+0 registros de entrada
48384+0 registros de saída"

"$ dd bs=32 if=/dev/hdd of=FS2004_4.iso
dd: lendo `/dev/hdd': Erro de entrada/saída
48384+0 registros de entrada
48384+0 registros de saída"

So the both cases shows me a file FS2004_4.iso with 1548288 bytes.

"$ df
/dev/hdd              630M  630M     0 100% /mnt/cdrom1"

Is it right?