This article explains bcdedit commands and how to use them

Below describes the Windows Bcdedit command-line tool which can be found on Elo's Windows based All-In-One computer systems.

The Bcdedit.exe command-line tool modifies the boot configuration data store.
The boot configuration data store contains boot configuration parameters and controls how the operating system is booted. You can use Bcdedit.exe to add, delete, edit, and append entries in the boot configuration data store.

For detailed command and option information, type bcdedit.exe /?