Recording stops before end of show

[GaryDouglas]

For the last month I've had multiple times when the record ends prematurely. I looked at those instances on my laptop where I can see the files on my Nvidia Shield and the files are accordingly smaller. My Shield has a WD My Passport 4TB external drive which is 70% fully. If no one else is having a similar problem, my first assumption would be to copy the contents of my current My Passport to a new drive and substitute that drive. If that solves the problem I can run the bad drive on SpinRite and see if it can be corrected. Any suggestions before I ask Grok what the step by step instructions are?

[NedS]

The Android DVR still defaults to keeping a trailing log that I can check, so if you give me a specific example then I can see if that recording logged an error.