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Windows predicts SSD to fail, CrystalDiskinfo health status Good...

Hi,

Fearing the worst but thought I should double check first! I just received a Windows 7 error message saying a hard disk error had been detected and I should back up. I've done 'wmic diskdrive get status' and that says 'Pred fail' but then I ran Crystaldiskinfo and my drive health is 'Good'. Screenshot below.

Any ideas - is windows wrong?

Thanks very much,

Ken
6 answers Last reply Best Answer
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  1. Windows will say this when it finds un-writable sectors or corruption. I just started another discussion about this same drive. They do fail, from what I can tell they are melting from extreme heat. I would back-up your information and prepare for the worst.
  2. Welcome to the TH community, Ken!

    I'd strongly recommend you backup all your data from the drive somewhere off-site before proceeding with the troubleshooting! I'd also advise you to edit your post and remove/erase the serial number from the screenshot as it reveals sensitive information about your hardware.
    Once you do all that, check the status of the solid state drive using an SSD-specific diagnostic utility to check up on the health and SMART status of the drive, rather than HDD-specific ones.

    Hope it helps. Keep us posted!
    SuperSoph_WD
  3. SuperSoph_WD said:
    Welcome to the TH community, Ken!

    I'd strongly recommend you backup all your data from the drive somewhere off-site before proceeding with the troubleshooting! I'd also advise you to edit your post and remove/erase the serial number from the screenshot as it reveals sensitive information about your hardware.
    Once you do all that, check the status of the solid state drive using an SSD-specific diagnostic utility to check up on the health and SMART status of the drive, rather than HDD-specific ones.

    Hope it helps. Keep us posted!
    SuperSoph_WD


    Thanks for the tip. I've downloaded drivedx onto OSX and that shows my drive as failed - the problem seems to be 'wear levelling count' which is 0. I assume this means it'll be done any moment...

    edit: Now i've read a bit about the wear levelling count I can't believe 0 could be correct - although i'm still a bit confused by it. I should note as well that the drive is showing as perfectly healthy on all other SMART indicators.

    Hopefully it hold out until tomorrow as i've ordered an external drive to back up (yes I know, I should have done this way before!)

    Thanks,

    Ken
  4. http://www.tomshardware.com/answers/id-2180127/ssd-die-wear-leveling-count-smart-reaches.html

    like they say doesn't mean its going to die but its getting old for sure so run regular backups and plan on a new drive some time in the future.
  5. Yeah - saw that, but i'm half thinking that it isn't being reported correctly. Logical sectors read is 5.4tb, written 3.5tb - is that not too low for the wear levelling count to be at 0%?

    Still intend on backing up but good to know it looks like it won't be a race against the clock now.

    Thanks,

    Ken
  6. Best answer
    Hey there again, Ken!

    With hardware is really hard to predict exactly when total corruption/failure would occur. It could be tomorrow, next month or in 10 years, you can never really tell. However, I believe yours is most probably going to fail soon, if the diagnostic utility you have used listed the drive as failed. In such confusing cases, I recommend using at least one more SSD diagnostic tool (you can check the link in my previous post) and benchmark the results! I'd also suggest you check your SSD manufacturer's official website for any brand-specific utilities you can use to check these stats.

    Wear Leveling Count is the attribute that represents the number of media program/erase operations (i.e. the number of times a block has been erased). This value is directly related to the lifetime of the SSD. The raw value of this attribute indicates the amount of exhausted P/E cycles and it's inversely proportional to the normalized WLC value. Once it hits 1,000, the WLC will hit zero.
    Basically, the current value stands for the remaining endurance of the drive in percentage, meaning that it starts from 100 and decreases linearly as the drive is written to, eventually it will drop to 0. This is an estimation of how many write, erase, rewrite etc. cycles each block can go through before failing. Here's the source of information

    Keep in mind that there are different NAND technologies, so some SSDs have blocks that last for around 1000 P/E cycles each, others, on the other hand, can endure as much as 30,000.

    Hope this article is useful. Keep us posted if you have any more concerns! :)
    Good luck!
    SuperSoph_WD
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