Product:
Microsoft Windows
Issue:
How rename many files in a folder by change the first letter to a other letter?
Solution:
Go to the command prompt.
Go to the folder where the files are.
Enter below to change all files to start with the letter b
ren *.* b*.*
More Information:
https://www.alphr.com/how-to-batch-rename-files-in-windows-10/
https://www.partitionwizard.com/partitionmagic/batch-rename-files.html