Steps

1. Stop service
   windows: services.msc
2. move db data files into the new data folder
3. remember to copy file “ibdata1” as well or it will cause “table doesn’t exist” error.
4. Restart service

Reference:

1. https://www.arekibo.com/blog/restore-a-mysql-database-from-backed-up-program-files-(-frm-myd-myi)-no-sql-dump-required!/
2. https://www.752club.com/mariadb-mysql-table-doesnt-exist-in-engine-error/