partially revert change, sti is still in init

src/mbr/mbr.nasm

@@ -34,6 +34,12 @@ init:
     
     mov ss, ax                      ; Set Stack Segment to 0
     mov sp, STACK_START             
+
+    mov ch, 0x01                    ; 256 WORDs in MBR (512 bytes), 0x0100 in cx
+    mov si, 0x7C00                  ; Current MBR Address (loaded here by BIOS)
+    mov di, MBR_ENTRY               ; New MBR Address (our new relocation address)
+    rep movsw                       ; copy 512 bytes from 0x0000:7c00 to 0x0000:MBR_ENTRY (7A00 as of writing)
+
     sti
 
     jmp 0:main