Date: Fri, 07 Mar 2008 09:16:17 -0500 From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Cc: freebsd-questions@freebsd.org Subject: Re: OT: disk drive question Message-ID: <44bq5q8vri.fsf@be-well.ilk.org> In-Reply-To: <20080307094808.B6101@wojtek.tensor.gdynia.pl> (Wojciech Puchar's message of "Fri\, 7 Mar 2008 09\:48\:16 %2B0100 \(CET\)") References: <20080307094808.B6101@wojtek.tensor.gdynia.pl>
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Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> writes: > sorry for posting here but possibly someone here will know the answer. > > i have 120GB seagate in my thinkpad. yesterday i (possibly) overheated > the disk somehow, by putting laptop on flat sticky surface. > > bad blocks developed on one partition like this > ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> > error=40<UNCORRECTABLE> LBA=52944196 > ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> > error=40<UNCORRECTABLE> LBA=52955844 > ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> > error=10<NID_NOT_FOUND> LBA=52956740 > > > i was able then (with normal cooling) to back up data from there, and tried > > dd if=/dev/zero of=/dev/partition bs=1m > > to force bad block reallocation. > > but it doesn't work, then reading always shows read errors. > > how to force this, or possibly is there any disk utility that would do this. > > if it requires disk to be cleaned out (reformatted somehow) that's not > a problem If you can, try the manufacturer's diagnostics http://www.seagate.com/www/en-us/support/downloads/seatools/ If not, try plugging the disk in on a working system and use SMART capabilities to check things out. Most likely, you need a new disk, but depending on the relative value of your time and the price of a disk, it's worth checking to make sure before springing for new gear. Good luck.
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