I guess at some point everyone here got the dreaded Windows message after inserting a CFast card into the reader, that there has an error occurred and Windows has to repair the file system of the card.
It always seemed to happen out of nowhere and was not really reproducible. Until now
My configuration:
UM46k @ FW4.9 / CFast card Angelbird AV Pro 256 GB - both slots populated
First I did some shots in 25p, then did a 120/25fps. After recording I switched into Playback mode and showed the last shot (slowmo) to the client. Then powered down while still in Playback mode. Bang - got the error message in Windows.
The same happend a few days ago - powered down while in Playback mode. Bang - error message.
Maybe others here can do a similar test and see if they can reproduce this behavior?
Seems like the camera OS is messing with the file structure while playing back and doesn't finish that thread when powering down.