[Trot]

Sorry not to get back to you before now. I really appreciate your helpful hints. I went to bed before checking for a reply.

Disk Management shows only the laptop HD.

I tried to initiate a remote desktop connection, but got the 3 reasons I could not connect:

not enabled

turned off

not available on network

But I have the Home edn, so no RDC.

The desktop is a fresh install, and everything works as it should. What mystifies me is that before my crash, I had full access, as I'd set it up, and could transfer, move, delete, or copy files with no problem.

Now, although the desktop system is visible, no HDs are, either C: or D:; just the computer name.

[TChad]

I guess I need clarification. Your missing D: drive that runs Win 10 must be on a different physical hard drive than your boot C: drive, that runs Win 11. Right? In other words, your missing D: drive is your old drive C, that was assigned a different drive letter by Win 11, or by you when you mapped the drive to D:. Right? Can you still boot from the old hard drive? If so, is all your data visible?