diff --git a/src/sys/boot/bootsec.asm b/src/sys/boot/bootsec.asm
index 4fa1b66..d3783a2 100755
--- a/src/sys/boot/bootsec.asm
+++ b/src/sys/boot/bootsec.asm
@@ -56,7 +56,7 @@
         xor     ax, ax
         mov     ds, ax
         mov     dl, [bootdrv]
-        mov     bx, 0x60
+;mji        mov     bx, 0x60
 ; mjikaboom
         mov	bx, 0x0a000
         mov     es, bx
@@ -77,15 +77,17 @@
   ;lets convert the ELF file to a linear binary so we can execute it
 ;mji        cmp     dword [0x600],464c457fh  ; The ELF signature is \07fELF
 ;mjikaboom
-        cmp     dword [0x0a0000],464c457fh  ; The ELF signature is \07fELF
+        mov     ax, 0x0a000
+	mov	es, ax
+        cmp     dword [es:0],464c457fh  ; The ELF signature is \07fELF
          jne    ldr_ELF_err            ; Ugh... not an ELF file !!!
 ;mji        cmp     word [0x600+4],101h    ; It should be statically linked etc.
 ;mjikaboom
-        cmp     word [0x0a0000+4],101h    ; It should be statically linked etc.
+        cmp     word [es:4],101h    ; It should be statically linked etc.
          jne    ldr_ELF_err
 ;mji        cmp     byte [0x600+6],1
 ;mjikaboom
-        cmp     byte [0x0a0000+6],1
+        cmp     byte [es:6],1
          jne    ldr_ELF_err
          jmp    short skip_err_handler
 ldr_ELF_err: