Date: Thu, 13 Jun 2019 13:02:48 +0200 From: peter.blok@bsd4all.org To: freebsd-scsi@freebsd.org Subject: Bad SSD drive - what happens with unreadable data Message-ID: <C13683A4-B5CB-43B9-84EC-1E18BD88D63E@bsd4all.org>
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Hi, I have a bad SSD drive. If I read it with dd and conv=noerror, what happens with the unreadable areas? Does it fill with zeroes, or does the driver still copy what it was able to read? I’m getting ATA status 51 back, many blocks in a row. Followed by chunks of readable data, followed by unreadable data. Is there a modepage or something else to tell the drive to pass on the bad data? Any other ideas? Peter
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