diff --git a/src/boot/mbr.inc b/src/boot/mbr.inc
index a03437e..682cfd7 100644
--- a/src/boot/mbr.inc
+++ b/src/boot/mbr.inc
@@ -9,80 +9,3 @@
 ;=----------------------------------------------------------------------------=;
 
 
-;-----------------------------------------------------------------------;
-; Checks if the CPU is compatible with 64-bits operating systems        ;
-; If the 21th bit of the eax register is set, then CPUID is supported   ;
-; We then test CPUID's result to see if long mode is supported          ;
-;-----------------------------------------------------------------------;
-[BITS 16]
-Is64bits:
-    pushfd                      ; recovering the flags in eax
-    pop eax
-    mov ecx, eax
-    xor eax, 0x200000
-    push eax
-    popfd
-
-    pushfd
-    pop eax
-    xor eax, ecx
-    shr eax, 21
-    and eax, 1                  ; magical spell of murta
-    push ecx
-    popfd
-
-    test eax, eax
-    jz .NonCompat               ; if (CPUID non supporté) goto NonCompat
-
-    mov eax, 0x80000000
-    cpuid
-    cmp eax, 0x80000001
-    jb .NonCompat               ; if (eax <= 0x80000001) goto NonCompat
-
-    mov eax, 0x80000001
-    cpuid
-    test edx, 1 << 29
-    jz .NonCompat               ; if (edx != 1 << 29) goto NonCompat
-        
-    ret                         ; back to mbr.s
-
-.NonCompat:
-    stc
-    ret
-
-;-------------------------------------------------------------------;
-; loading second stage loader (loader.s)                            ;
-;-------------------------------------------------------------------;
-LoadSec:
-	    
-	;; prepare data for reading the disk
-	xor ax, ax
-    mov dl, [Bootdrv]
-    int 0x13
-    
-    mov ax, SECOND_STAGE
-    mov es, ax
-    xor	bx, bx
-    
-    mov ah, 2                   ; ah = 2 = function read sectors from disk 
-    mov al, 2                   ; al = number of sectors to read (1 - 128)
-    xor ch, ch                  ; ch = track/cylinder number
-    mov cl, 2                   ; sector number
-    xor dh, dh                  ; dh = head number
-    mov dl, [Bootdrv]
-    int 0x13
-	jc .read_error
-	
-	ret
-
-.read_error:
-	popa
-	stc
-	ret
-
-
-
-
-
-
-
diff --git a/src/boot/pseudo_kern.c b/src/boot/pseudo_kern.c
deleted file mode 100644
index ca7f3fc..0000000
--- a/src/boot/pseudo_kern.c
+++ /dev/null
@@ -1,28 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Kernel entry point                                            //
-//----------------------------------------------------------------------------//
-
-extern void scrollup(unsigned int);
-extern void print(char *);
-
-extern kY;
-extern kattr;
-
-void _start(void)
-{
-        kY = 18;
-        kattr = 0x5E;
-        print("un message\n");
-
-        kattr = 0x4E;
-        print("un autre message\n");
-
-        scrollup(2);
-
-        while (1);
-}
diff --git a/src/boot/pseudo_screen.c b/src/boot/pseudo_screen.c
deleted file mode 100644
index 8df3ea7..0000000
--- a/src/boot/pseudo_screen.c
+++ /dev/null
@@ -1,84 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Kernel screen func                                            //
-//----------------------------------------------------------------------------//
-#include "types.h"
-
-#define RAMSCREEN 0xB8000       /* debut de la memoire video */
-#define SIZESCREEN 0xFA0        /* 4000, nombres d'octets d'une page texte */
-#define SCREENLIM 0xB8FA0
-
-char kX = 0;                    /* position courante du curseur a l'ecran */
-char kY = 17;
-char kattr = 0x0E;              /* attributs video des caracteres a afficher */
-
-
-/*
- * 'scrollup' scrolle l'ecran (la console mappee en ram) vers le haut
- * de n lignes (de 0 a 25).
- */
-void scrollup(unsigned int n)
-{
-        unsigned char *video, *tmp;
-
-        for (video = (unsigned char *) RAMSCREEN;
-             video < (unsigned char *) SCREENLIM; video += 2) {
-                tmp = (unsigned char *) (video + n * 160);
-
-                if (tmp < (unsigned char *) SCREENLIM) {
-                        *video = *tmp;
-                        *(video + 1) = *(tmp + 1);
-                } else {
-                        *video = 0;
-                        *(video + 1) = 0x07;
-                }
-        }
-
-        kY -= n;
-        if (kY < 0)
-                kY = 0;
-}
-
-void putcar(uchar c)
-{
-        unsigned char *video;
-        int i;
-
-        if (c == 10) {          /* CR-NL */
-                kX = 0;
-                kY++;
-        } else if (c == 9) {    /* TAB */
-                kX = kX + 8 - (kX % 8);
-        } else if (c == 13) {   /* CR */
-                kX = 0;
-        } else {                /* autres caracteres */
-                video = (unsigned char *) (RAMSCREEN + 2 * kX + 160 * kY);
-                *video = c;
-                *(video + 1) = kattr;
-
-                kX++;
-                if (kX > 79) {
-                        kX = 0;
-                        kY++;
-                }
-        }
-
-        if (kY > 24)
-                scrollup(kY - 24);
-}
-
-/*
- * 'print' affiche a l'ecran, a la position courante du curseur, une chaine
- * de caracteres terminee par \0.
- */
-void print(char *string)
-{
-        while (*string != 0) {  /* tant que le caractere est different de 0x0 */
-                putcar(*string);
-                string++;
-        }
-}