diff --git a/src/sys/boot/bootsec.asm b/src/sys/boot/bootsec.asm
index c2bb571..2216680 100755
--- a/src/sys/boot/bootsec.asm
+++ b/src/sys/boot/bootsec.asm
@@ -43,14 +43,14 @@
         out     0x60, al
         lgdt    [gdtinfo]               ;Load GDT
         mov     ecx, CR0		;Switch to protected mode
-        inc     cx
+        or	ecx, 1		; set PE bit
         mov     CR0, ecx
         mov	ax, flat_data-gdt_table	; Selector for 4Gb data seg
         mov	ds, ax			; {2} Extend limit for ds
         mov	es, ax			; Extend limit for es
         mov	fs, ax			; fs and...
         mov 	gs, ax			; gs
-        dec     cx				; switch back to real mode
+        dec     ecx				; switch back to real mode
         mov     CR0, ecx
         sti
         xor     ax, ax
@@ -99,8 +99,8 @@
         mov     cx,[0x600+2ch]
 
 sectionloop:
-        dec     cx                      ; Next section
-        push    cx                      ; Save cx on the stack while we load
+        dec     ecx                      ; Next section
+        push    ecx                      ; Save cx on the stack while we load
                                         ; the section into memory
         mov     bx, 0x600               ; access image location
 
@@ -151,8 +151,8 @@
         ;call zero_memblock              ; Zero the rest of the section
 
 nextsect:
-        pop     cx                          ; Restore our section count
-        or      cx,cx                       ; Was this the last one ?
+        pop     ecx                         ; Restore our section count
+        or      ecx,ecx                       ; Was this the last one ?
 	 jnz    sectionloop