On Sat, Aug 23, 2014 at 11:20 AM, Carlos E. R.
On 2014-08-23 16:41, Greg Freemyer wrote:
Using a smaller blocksize helps, but the reality is that dd as it currently exists (to my knowledge) is not designed to operate optimally in the presence of real world media errors. ewfacquire on the other hand can to be told to read those same 1MB blocks, but if media errors occur to retry the read with ever smaller reads until only the bad sectors actually fail to be copied.
That's what both ddrescue and dd_rhelp (w. dd_rescue) do :-)
Agreed, but for whatever reason I've only used them if my normal tools fail. (ie. ewfacquire and/or dd). I captured an old Red Hat server a couple months ago. I couldn't shut it down and it only had USB-1 ports. I didn't want to install any software so I used "dd if=/dev/sda conv=sync,noerror | netcat" on the server. Then "netcat | ewfacquirestream" on my laptop. You never know what tools you will have to use on a given job. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org