Re: dd failed
- From: Andy Burns <usenet.july2007@xxxxxxxxxxxxxx>
- Date: Thu, 25 Oct 2007 23:00:49 +0100
On 25/10/2007 23:53, Alan Secker wrote:
I wanted to clone a drive as I have done many times before. I booted from a
knoppix cd and ran dd if=/dev/hde of=/dev/hdg as root. Both drives had been
proven to be sound and bootable before this exercise. The process stopped with the message 'input/output error'. My question is: 'What tests can I make to identify what might have gone wrong?'
sounds like one disk *HAS* got faulty sector(s)
If it comes down to recovering as much data possible from the source disk you might want to try
dd if=/dev/hde of=/dev/hdf conv=noerror,sync
which will carry on past any read errors, substituting zeros for the unreadable sectors, you have to then hope the zeros are in a spot that doesn't matter to much to you :-(
.
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