[plug] dd and md5 report 'Input/output error'

[Daniel]

Thanks, I tried 'dd' of cd on Redhat 7.2 & Mandrake 8.1 and got the same 
result so thought it must be me!
I suspect the 'dd' command gives errors if it doesn't have the perfect 
number of repetitions set, and get the impression the file still has 
reliable content.

This is complicated by there being no burner on the linux machine and every 
cd once burnt and returned to linux (dd if=/dev/cdrom | md5sum) gives a 
different checksum.  I can see I need to swap the burner then compare linux 
burnt cds(checksum on cds and dd of cds) with original downloaded iso file. 
[maybe just get a burner for the linux system and be done with it - Sony 
with burnproof?]

Cheers,
Daniel.


At 20:24 29/03/2002 +0800, you wrote:
>On Fri, Mar 29, 2002 at 05:43:31PM +0800, Daniel wrote:
>
> > dd if=/dev/cdrom of=Mandrake82-cd1-inst.i586.iso
> > dd: reading '/dev/cdrom': Input/output error
> > 1332304+0 records in
> > 1332304+0 records out
>
>I had a similar problem copying a CD a few months ago.  No one on the
>list had any real ideas but I always suspected it was a kernel problem,
>although I never had time to really fiddle around and fix it.  Try
>upgrading your kernel.
>
>--
>DSA 0x2A0F80F3: 39F3 4E10 9BE9 E728 A9EE  029C D51D EE53 2A0F 80F3


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