Warren Young wrote:
On 11/3/2010 8:32 AM, Keith Roberts wrote:
So to prepare the disk for returning under warranty, I used another HDD utility to clean the disk again
...
So I ran an Advanced r/w scan again with Hitachi DFT, and the result was OK.
A complete disk wipe brings bad sectors to the drive's attention, forcing it to remap them using spare sectors set aside for the purpose.
<snip>
If you put it back into service, at minimum I would set up smartd, from the smartmontools package. Maybe run smartctl on it by hand daily or weekly, too. If you find that errors start happening again, there is something continually degrading the drive's integrity, so the automatic sector remapping will eventually run the drive out of spare sectors.
<snip> Yeah, but I have problems with smartmon: for example, I've got a drive in one server that's got two bad sectors, which SMART reports. I've followed the instructions on how to make the log messages go away, and fsck -c... but on reboot, SMART seems to ignore what badblocks found, and the irritating messages are back.
mark