This command creates a copy of the specified boot entry. bcdedit /store /copy { } /d Specifies the store to be used. If this ...

This command creates a copy of the specified boot entry.

bcdedit [/store ] /copy {} /d 

          Specifies the store to be used. If this option is not
                    specified, the system store is used. For more information,
                    run "bcdedit /? store".

                Specifies the identifier of the entry to be copied.
                    For more information about identifiers, run
                    "bcdedit /? ID".

       Specifies the description to be applied to the new entry.

Example:

The following command creates a copy of the specified operating system boot
entry:

    bcdedit /copy {cbd971bf-b7b8-4885-951a-fa03044f5d71} /d "Copy of entry"