A follow up on my suggestion: > Would it be possible to copy (with 'dd') the device (/dev/sdb) with sector > errors to a fourth disk (/dev/sde) and then remove the faulty sdb- > drive and reposition the newly copied sde to sdb's position to have > this act as the first sdb-drive, now working without any physical > faults, even if the data is incomplete in sectors; and now being > possible to recover the third drive (/dev/sdd1)? 'dd' is NOT the program one would want to use for this task. "ddrescue" is the one! NB: dd_rescue is not the same program, and may or may not work. Just note that "apt-get install ddrescue" installs dd_rescue, not ddrescue... ddrescue is downloaded (with e g curl) from: # curl ftp.gnu.org/gnu/ddrescue/ddrescue-1.13.tar.gz >ddrescue-1.13.tar.gz Having installed, copied disk to disk and swapped disks the RAID started ti rebuild /dev/sdd1 and I have now a clean array again! -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html