Re: Sandisk SSD smart checksum error

Aurelien Dellieux wrote:
> i try to understand what is happening on a SanDisk SSD.
> it is in an Asus ROG G752VW.
> please find the log file attached.
>
> i manage three identical laptops.
> on two of them, i don't have the smart checksum error.

Do all three use same (which?) version of SATA driver?
Do all three use same firmware version of SSD?


>
> i don't know what to do with the one producing the error.
> is the disk really faulty ?
>

Probably not. A SMART checksum error does not imply errors in actual 
written data.


> smartctl 6.5 2016-05-07 r4318 [x86_64-w64-mingw32-win10] (sf-6.5-1)
> ...
> Warning! SMART ATA Error Log Structure error: invalid SMART checksum.
> SMART Error Log Version: 1
> Warning: ATA error count 65535 inconsistent with error log pointer 3
>
> ATA Error Count: 65535 (device log contains only the most recent five 
> errors)
> ...
> Error 65535 occurred at disk power-on lifetime: 65535 hours (2730 days 
> + 15 hours)
> ...
>   After command completion occurred, registers were:
>   ER ST SC SN CL CH DH
>   -- -- -- -- -- -- --
>   ff ff ff ff ff ff ff


The above output suggests that a block of 0xff bytes is returned for the 
Error Log structure. This may be a problem with the drive firmware or 
the pass-through functionality of SATA driver.

Please provide outputs of:
   smartctl -r ioctl,2 -i -l error ...
and
   smartctl -x ...
as attachments.

If possible, also try whether the problem persists if smartctl is run 
from some Live System
(https://www.smartmontools.org/wiki/LiveCDs).

Thanks,
Christian


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