This command sets an entry option value in the boot configuration data store. bcdedit /store /set { } Specifies the store ...

This command sets an entry option value in the boot configuration data store.  bcdedit [/store ] /set [{}]          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 modified.  If not                 specified, {current} is used. For more information about                 identifiers, run "bcdedit /? ID".        Specifies the option data type that will be created or                 modified. Run "bcdedit /? TYPES" for more information about                 data types.           Specifies the value that should be assigned to the option. The                 format of  depends on the data type specified. Run                 "bcdedit /? FORMATS" for more information about data formats.  Examples:  The following command sets the application device to the partition C: for the specified operating system entry:      bcdedit /set {cbd971bf-b7b8-4885-951a-fa03044f5d71} device partition=C:  The following command sets the application path to \windows\system32\winload.exe for the specified operating system entry:      bcdedit /set {cbd971bf-b7b8-4885-951a-fa03044f5d71} path         \windows\system32\winload.exe  The following command sets the NX policy to OptIn for the current operating system boot entry.      bcdedit /set nx optin