On 02/21/2013 04:42 AM, stone@heisl.org wrote:

i think this is the right way -> dd if=/dev/zero of=/dev/sdc1 bs=4096
count=1 seek=1073006628 (result of badblocks in my case 48 piece's)?

Yes, but for safety when typing a command line, I always put of= last.
Just in case I hit the <enter> key accidentally:

dd if=/dev/zero bs=4096 count=1 seek=1073006628 of=/dev/sdc1

quoted

and this for all badblocks?

Yes.

You should double-check the filesystem blocksize--it is usually 4096 but
ext4 allows you to change it.  "fsck -n" will report the total size of
the filesystem in its blocks.  Divide that into the total size of the
device to get the block size.

Phil