--- bootsect.S.0	Fri May 21 14:32:23 1999
+++ bootsect.S	Fri May 21 14:33:24 1999
@@ -129,10 +129,10 @@
 
 load_setup:
 	xor	ah,ah			! reset FDC 
-	xor	dl,dl
+	xor	dx,dx
 	int 	0x13	
 
-	xor	dx, dx			! drive 0, head 0
+! dx = 0 from above, drive 0, head 0
 	mov	cl,#0x02		! sector 2, track 0
 	mov	bx,#0x0200		! address = 512, in INITSEG
 	mov	ah,#0x02		! service 2, nr of sectors

.