I have already done recovery with only 40 bad sectors (5 physical considering it is AF), but I wanted to find out if this reallocation count is real. It is based on the raw SMART value. This is from HDDSuperClone, so I trust the output. I myself have not seen a reallocation count that high with a drive that was still functional with a running OS.

# model HGST HTS545050A7E680
################ START SMART DATA ################
# startsmart
# SMART data structure version 16
# ID Flags Current Worst Threshold Raw data Attribute name
# 001 0x002f 086 076 062 0x00000000800000 Read Error Rate
# 002 0x0025 100 100 040 0x00000000000000 Throughput Performance
# 003 0x0023 220 100 033 0x00000e00000001 Spin-Up Time
# 004 0x0032 075 075 000 0x00000000009be9 Start/Stop Count
# 005 0x0033 100 100 005 0x00000000280160 Reallocated Sectors Count
# *** WARNING *** Reallocated Sectors Count = 2621792
# 007 0x002f 100 100 067 0x00000000000000 Seek Error Rate
# 008 0x0025 100 100 040 0x00000000000000 Seek Time Performance
# 009 0x0032 038 038 000 0x00000000006b77 Power-On Hours Count
# 010 0x0033 100 100 060 0x00000000000000 Spin Retry Count
# 012 0x0032 097 097 000 0x0000000000130e Power Cycle Count
# 183 0x0032 100 100 000 0x00000000000000 SATA Downshifts
# 184 0x0033 100 100 097 0x00000000000000 End-to-End error
# 187 0x0032 001 001 000 0x00193100641eba Reported Uncorrectable Errors
# 188 0x0032 100 100 000 0x0000040035009c Command Timeout
# 190 0x0022 069 055 045 0x0000001424001f Temperature
# 191 0x0032 097 097 000 0x0000000000032e G-Sense Errors
# 192 0x0032 099 099 000 0x000000018f018f Power-Off Retract Cycles
# 193 0x0032 001 001 000 0x0000000018e529 Load/Unload Cycles
# 196 0x0032 100 100 000 0x0000000000002c Reallocation Events
# 197 0x0032 100 091 000 0x00000000000028 Current Pending Sectors
# *** WARNING *** Current Pending Sectors = 40
# 198 0x0030 100 100 000 0x00000000000000 Off-line Uncorrectable
# 199 0x0036 100 100 000 0x00000000000000 UDMA CRC Error Rate
# 223 0x002a 100 100 000 0x00000000000000 Load/Unload Retries
# endsmart
################ END SMART DATA ################

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I suspect that the raw SMART data consist of several components.

Reallocated Sectors Count 0x00000000280160 -> 0x28 / 0x0160
Current Pending Sectors 0x00000000000028

Reported Uncorrectable Errors 0x00193100641eba -> 0x1931 / 0x00641eba
Command Timeout 0x0000040035009c -> 0x0004 / 0x0035 / 0x009c
Power-Off Retract Cycles 0x000000018f018f -> 0x018f / 0x018f
Temperature 0x0000001424001f -> 0x14 / 0x24 / 0x001f

As I see it, the raw reallocated sector count is 0x160 (lower 16 bits). The upper 8/16 bits appears to be the pending sector count.

I could be wrong, though.

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A backup a day keeps DR away.

That makes sense, at least a lot more sense than 2 million reallocations

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Home of HDDSuperClone

I might have misinterpreted this attribute:

Reported Uncorrectable Errors 0x00193100641eba -> 0x1931 / 0x00641eba

This might make more sense:

Reported Uncorrectable Errors 0x00193100641eba -> 0x1931 / 0x0064 / 0x1eba

_________________
A backup a day keeps DR away.

Details, details...

FYI I am doing this for a friend who's mom recently passed, and they needed the password removed on a laptop. After noticing abnormal hard drive activity, I panicked when I checked the smart status. And now after cloning, it has spent some time finishing a windows update that was in process (I have not put it online so it must have already been in process). There is also still some crapware on it from a few popups I have seen. At least now I am not killing the drive. I might play with the failing drive later on to see if I can get the smart stats to change by writing to the bad sectors.

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