Hello, On Tue, 17 Apr 2007 22:27:36 -0500 "Rajko M." <[EMAIL PROTECTED]> wrote:
> On Tuesday 17 April 2007 04:15, Clayton wrote: > ... > > I'm assuming the drive is unrecoverable (ie it's not worth risking my > > data to try and run the Maxtor tools on it and "repair" the drive)... > > so it's up for replacement in the next week or so. > > > > You may try to slow down the drive. > I got one that was about to fail, but decreasing the speed, using Maxtor > utilities, from 66 to 33 helped and it still runs. Probably, the decreasing speed problem is because the HDD controller changed a bad sector into a spare sector. and the spare sector possibility don't optimize to seek, I guess. AFAIK, A modern HDD has a number of spare sectors. and when happened a bad sector, that can replace a bad sector into a spare sector by using the hard drive tools, etc. *But*, there is a limitation in the number of spare sectors (and depend on HDD). For example, the following results by a smartctl on my HDD. # smartctl -A /dev/hda | egrep -e 'ATTRIBUTE_NAME|Reallocated_Sector_Ct' ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 2 The HDD used two spare sectors because the HDD had two bad sectors. And if the raw_value exceed the threshold, then it is necessary to change it with a new HDD, I think. So, there is a one way to defend the data from the bad sector. It is a RAID (Excluding RAID0). I would recommend the Linux Software RAID. In addition, you would want to read the following documents. http://help.com/wiki/Bad_sector http://smartmontools.sourceforge.net/BadBlockHowTo.txt Thanks, eshsf -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
