Date: Sun, 7 Jun 2009 19:49:41 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Geoff Fritz <gfritz@gmail.com> Cc: "John ." <comp.john@googlemail.com>, freebsd-questions@freebsd.org Subject: Re: please recommend a disk-exercising program? Message-ID: <alpine.BSF.2.00.0906071948490.99901@wojtek.tensor.gdynia.pl> In-Reply-To: <20090607165504.GA67823@dev.null> References: <abc784790906070243t419d8ebbp59a68af23e902004@mail.gmail.com> <20090607165504.GA67823@dev.null>
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> > I've seen several mentions of "dd" in this thread, and I'll say that I've > seen several recommendations elsewhere to use a simple: > > dd if=/dev/<device> of=/dev/<device> forgot bs=1m or at least 64kB, unless you like to wait days with default bs=512 > > to "refresh" the drive. That is, dd will read the block(s), then attempt to > write them back, and if there are problems, the drive should re-map the sector add conv=noerror,osync
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