"Alarm Event: No disk" on IPC-EBW81200

[nayr]

card does not become empty; it overwrites the oldest stuff continuously.. its always full..

basically yeah, its not counterfit but likely still crapping out from time to time.

 

[fa355115]

sorry, corrected, meant full.
I am running your tool now in "burn it!" mode

 

[fa355115]

ok, I have run the test for a continuous 60 hours reading, writing and verifying

... no errors found on the SD card.
I was getting erros afer few days of recording triggered by motion detection.

According my experience this is probably too much resource consuming for the Dahua camera, reason why the camera was failing to write / found the SD card after some time ...
So can not do anything else than lowering the recording frequency.