Hi,
I don't have a clue as to what would be causing that on such a repeated basis..
I thought maybe turning off Fast Startup was for some reason not actually turning off all of it's features..
If this is also happening on 1909, that is even more strange..
After the one time I was able to duplicate your problem, I have not been able to do it again..
I switch my external drives between Win 7 Pro and 10 Pro on a frequent basis and have never encountered something like that.. Very rarely I will need to allow ChkDsk to run, but no issues are found and everything works..
Not only do I do this with USB drives, but SATA as well.. I have run SATA power and data cables to an area outside the computer on a shelf for this purpose..
There may be a problem with Windows 10, but I am thinking there is some kind of an unknown contributing factor as well.. Otherwise I would be having a lot more of these issues, and there would be a lot more of this showing up on the Forums..
I suppose it could even be hardware\driver related in some fashion... I know all the guessing is of little help, but maybe something to think about..
It's expected with Win10. Turns out the Drives were changed from NTFS to RAW. Ran a fix I found online through cmd and thankfully both drives are back to NTFS and the data is showing it's there. Was able to fuss with the permissions on one drive and regain access and everything seems to be fine with it. The other drive just finished getting repaired back to NTFS and now I'm going to fuss with the permissions and hope there is no damage.
I decided I'm going to let Windows keep breaking down until I have no other choice but to wipe it clean again. Any recommendations on which version of Windows10 I should reinstall? I'm not a fan of these "features" they keep releasing and I don't need them. I just want to edit my video, play my games and VR, use Plex and, what seems to be impossible, backup and manage data on external drives.