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I have a secondary hard drive in my Windows 10 machine which has not been given any problems until it suddenly disconnected today. After a shutdown and restart, everything appears to be working and the only error/warnings messages in the event log were

An error was detected on device \Device\Harddisk0\DR0 during a paging operation.

Followed by

Disk 0 has been surprise removed.

(Note , the Disk is Harddisk0\DR0, but is not the bootable/system disk with is a separate SSD drive)

I tried to run a few tests to see if the disk is bad or is about to go bad and the results don't seem to be consistent.

Chkdsk said there was no need to check it as no errors had been detected, but I continued and it completed without errors.

wmic /namespace:\\root\wmi path MSStorageDriver_FailurePredictStatus

returns false.

DiskSmartView (from Nirsoft) seems to say there are no re-allocated sectors, although it does have a Unknown status rather than OK.

DiskSmartView

CrystalDiskInfo says the Health Status is good, but appears to suggest the number of re-allocated sectors is 200 which I would not consider good.

CrystalDiskInfo

I must be misreading one of these programs, but I am not sure which.

So the question is - Is my disk on its way out?

Added SmartCtl results SmartCtl

sgmoore
  • 6,599

2 Answers2

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The SMART data indicates that your disk is in perfect shape.

The algorithm calculates this number based upon the raw data, but it's not intuitive.

A new hard drive should have a high number which is the theoretical maximum (100, 200, or 253 depending on the manufacturer), that decreases during its lifetime.

The indicator for Temperature doesn't make sense, but apart from it everything is correct.

Take this event as a warning and keep backups, but the disk seems to be OK.

From NTFS.com S.M.A.R.T. Attributes:

Attribute values can range from 1 to 253 (1 representing the worst case and 253 representing the best). Depending on the manufacturer, a value of 100 or 200 will often be chosen as the "normal" value.

For most attributes, a value above the threshold is good and means no errors.

harrymc
  • 498,455
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CrystalDiskInfo says the Health Status is good, but appears to suggest the number of re-allocated sectors is 200 which I would not consider good.

No, you are misreading the columns. The raw value in Crystaldiskinfo tells you that there are zero reallocated sectors.

If I read the report like you do the temperature of your drive is 123°C whereas in reality it is 1b(hex) = 16+11 = 27 °C. The temperature is perfect.

Furthermore your load/unload cyles (raw) value indicate that your use profile does not match the original parking time schedule of WD which is 8 seconds if I remember correctly.

WD has set a very short time period after which the firmware parks the heads. I can't find my documentation, I think it was 8 seconds - I own a WD40EZRZ myself. You drives experienced already ~240.000 cycles which is below the guaranteed figure of 300.000 (see link)

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-blue-hdd/data-sheet-wd-blue-pc-hard-drives-2879-771436.pdf

but you could avoided that situation by increasing the parking time interval. After only 3 years of running time you already reached 83% of the guaranteed load cycle figure.

To learn more about the issue search for WDIDLE3 or read

https://www.truenas.com/community/threads/hacking-wd-greens-and-reds-with-wdidle3-exe.18171/

As for the comment of JW014 below I prefer to use smartmontools over Crystaldiskinfo although you sometimes have to set additional parameters such as -d,sat or similar when the drive is connected by means of an external USB housing.

r2d3
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