Windows 10: Missing files after switching to new drive for boot

it may be that I was incorrect on which drive it was booting from, but the speed seemed to be as such that it was the SSD while the SSD was still labeled F:
I had manually changed the boot order to prioritize the F: drive to boot from. But I may be incorrect. It is probably as CountMike said, it booted from one drive but ran windows from another.
However I am 100% certain F: was my SSD and F: had my newly created documents on it. Now it does not

 

In BIOS, you don't choose which drive to BOOT of by letter but by Disk 0,1, etc. Letters are assigned by OS and don't "stick" with disk or partition. Letters are assigned starting with C:\ for Windows partition and not necessarily for disk/partition it BOOTs from. Some of reasons it's recommended to disconnect any other drives while installing OS.
UEFI BIOS looks at disks that have UEFI partitions first which are not easily distinguished so scenario where it BOOTs from one physical disk and runs Windows from another is quite plausible.
Windows just doesn't delete any files that are 3rd party automatically, files could be damaged in some way if disk is not in full working order or file system damaged but for them just to disappear is practically impossible, even when AV deletes them becuase of some malware, they could be traced..

 

so it seems there is no solution.
thanks for your time everyone