BitMaxz - Thanks for showing me "Voidtools"  I was able to locate the debug file.

Strange that the file path was:

This PC>Local Disk (C:)>Users>DennyLight>AppData>Roaming>Bitcoin

But the file explorer under DennyLight looked like this:

https://imgur.com/a/UhpBkQa


nc50lc - your instructions worked perfect and my node started the IBD right away. 


Thanks both for your patience and guidance as computers are not my specialty.

BitMaxz:  I am unable to locate AppData\Roaming\Bitcoin on my C: and E: drives.  For what its worth I did not setup a wallet while running the pruned node.  My GUI was blank but did show ~32 active connections and data transmitting.

nc50lc:  I have read the ## Configuration File Path

"The configuration file is not automatically created; you can create it using your favorite text editor. By default, the configuration file name is `bitcoin.conf` and it is located in the Bitcoin data directory, but both the Bitcoin data directory and the configuration file path may be changed using the `-datadir` and `-conf` command-line options."

Where is the Bitcoin data directory? 

Bitcoin Client Software and Version Number: Bitcoin Core Version v0.21.1

Operating System: Windows 10 64 bit

System Hardware Specs: 4.2 GHz 4 core CPU; 32 GB RAM; 952 GB free disk space

Description of Problem: Error Message "Error opening block database".  BTC Core stored on C: drive. Node running nominally and I Unchecked Pruned Node Option. Uninstalled Bitcoin Core from my C: drive.  Installed Bitcoin Core on my new E: drive (1TB). Message displayed on startup "You need to rebuild the database using -reindex to go back to unprunned mode.  This will redownload the entire blockchain.
Do you want to rebuild the block database now?"

Any Related Addresses: N/A

Any Related Transaction IDs: N/A

Screenshot of the problem: https://imgur.com/a/yJnskSd

Log Files from the Bitcoin Client: IDK how to find these