[dm-crypt] Fwd: Cannot wipe header on device
rnicholsNOSPAM at comcast.net
Mon Dec 14 20:53:59 CET 2015
On 12/14/2015 02:44 AM, Luís de Sousa wrote:
> I understand this is not an issue with cryptsetup, but would anyone
> have suggestions on how to proceed? Is there any hope of "fixing"
> this, e.g. marking this sector as unusable?
> Thank you,
> $ sudo dd if=/dev/zero of=/dev/sdb1 bs=4096 count=1 oflag=sync,direct
> dd: error writing ‘/dev/sdb1’: Remote I/O error
> 1+0 records in
> 0+0 records out
> 0 bytes (0 B) copied, 0.00142455 s, 0.0 kB/s
There should also have been some system error messages logged which
might be informative.
When any reasonably modern (last 20 years, or so) drive shows an
I/O error on a write operation, it generally means that the drive
has run out of spare sectors or has some problem other than media
errors. Such a drive is long past the time it should have been
It would be interesting to see the output from
"smartctl -A /dev/sdb", if the interface supports it. (Not all
USB <=> SATA bridge chips support the necessary commands.)
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.
More information about the dm-crypt