On Sun, Jun 23, 2013 at 1:21 PM, Pavel Machek <pavel@xxxxxx> wrote: > ...Ok, lets try with dd. > > root@amd:~# dd if=/dev/sda4 of=/dev/zero bs=1 skip=8958947328 > dd: reading `/dev/sda4': Input/output error > 0+0 records in > 0+0 records out > 0 bytes (0 B) copied, 5.05805 s, 0.0 kB/s I once noticed a similar problem. The trouble is that the kernel always seems to be doing a larger read access that failes for this sector, and the write is never executed. You can try: hdparam --write-sector 961237188 /dev/sda Hope that helps, Marcus -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html