How to copy files with bad sectors

written by Admin


Posted on 2013-10-28


Problem

I must copy a file that has bad blocks (only a file, not a partition)

Solution

You can use dd in a root shell:
# dd if='source_file' of='dest_file' bs=4k conv=noerror,sync

To watch progress, open a new shell, find the pid of the dd process using pgrep (or ps) and run watch to force the process to print statistics on the first shell:
# pgrep -l '^dd$'
1019 dd

# watch -n 10 kill -USR1 1019

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