diff --git a/core/localboot.inc b/core/localboot.inc

index 1fe3102..30f34fc 100644

--- a/core/localboot.inc

+++ b/core/localboot.inc

@@ -33,6 +33,15 @@ local_boot:

 		cmp ax,-1

 		je .int18

+		cmp ax,-2

+		jne .load

+

+		mov al,[DriveNumber]

+		cmp al,80h

+		mov al,80h

+		jnz .load

+		inc ax

+.load:

 		; Load boot sector from the specified BIOS device and jump to it.

 		mov dl,al

 		xor dh,dh