Re: low-level formatter for linux

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Markus Kesaromous wrote:
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   108   078   006    Pre-fail  Always       -       157925240
  3 Spin_Up_Time            0x0003   096   096   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       670
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       1
  7 Seek_Error_Rate         0x000f   087   060   030    Pre-fail  Always       -       627490383
  9 Power_On_Hours          0x0032   082   082   000    Old_age   Always       -       16386
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       767
187 Reported_Uncorrect      0x0032   001   001   000    Old_age   Always       -       863
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   061   039   045    Old_age   Always   In_the_past 39 (0 2 41 29)
194 Temperature_Celsius     0x0022   039   061   000    Old_age   Always       -       39 (0 14 0 0)
195 Hardware_ECC_Recovered  0x001a   060   045   000    Old_age   Always       -       185506743
197 Current_Pending_Sector  0x0012   093   093   000    Old_age   Always       -       157
198 Offline_Uncorrectable   0x0010   093   093   000    Old_age   Offline      -       157
199 UDMA_CRC_Error_Count    0x003e   200   037   000    Old_age   Always       -       366
200 Multi_Zone_Error_Rate   0x0000   100   253   000    Old_age   Offline      -       0
202 TA_Increase_Count       0x0032   100   253   000    Old_age   Always       -       0

Right now the drive has just one reallocated sector.  Your problem is the
157 sectors that are pending reallocation.  Bad sectors cannot be
reallocated until the next time they are written.  Simply writing zeros
to the whole drive will accomplish that.  (For anyone who wonders why
a bad sector cannot be immediately reallocated, I suggest you think
about that for a while, specifically about what data will be returned
when that newly allocated, error-free sector is read.  Remember, the
contents of the original sector could not be determined.)

As long as new bad sectors don't keep appearing, the drive could remain
problem free for many years.  But, at some time in the past the drive
overheated quite severely.  Maybe that was the cause of the current crop
of bad sectors, maybe not, but severe overheating can seriously shorten
a drive's life, so I'd either replace the drive or use it for something
non-critical just on that basis.

--
Bob Nichols     "NOSPAM" is really part of my email address.
                Do NOT delete it.

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