My transcript for fixing error based on original documentation

root@t42:~# smartctl -l selftest /dev/hda
smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed: read failure       50%      1863         48784734
# 2  Extended offline    Completed: read failure       50%      1719         48784734

sic we have an error at 48784734

root@t42:~# smartctl -A /dev/hda
smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000b   100   100   062    Pre-fail  Always       -       65536
  2 Throughput_Performance  0x0005   100   100   040    Pre-fail  Offline      -       3662
  3 Spin_Up_Time            0x0007   250   250   033    Pre-fail  Always       -       1
  4 Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       1520
  5 Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000b   100   100   067    Pre-fail  Always       -       0
  8 Seek_Time_Performance   0x0005   100   100   040    Pre-fail  Offline      -       0
  9 Power_On_Hours          0x0012   096   096   000    Old_age   Always       -       1866
 10 Spin_Retry_Count        0x0013   100   100   060    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       1319
191 G-Sense_Error_Rate      0x000a   100   100   000    Old_age   Always       -       1
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       1703983
193 Load_Cycle_Count        0x0012   095   095   000    Old_age   Always       -       56800
194 Temperature_Celsius     0x0002   171   171   000    Old_age   Always       -       32 (Lifetime Min/Max 14/42)
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       5
197 Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       1
198 Offline_Uncorrectable   0x0008   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       0

And we do have Current_Pending_Sector

root@t42:~# fdisk -lu /dev/hda

Disk /dev/hda: 40.0 GB, 40007761920 bytes
255 heads, 63 sectors/track, 4864 cylinders, total 78140160 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0xcccdcccd

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *          63    75119939    37559938+  83  Linux
/dev/hda2        75119940    78140159     1510110    5  Extended
/dev/hda5        75120003    78140159     1510078+  82  Linux swap / Solaris

sector is part of /dev/hda1