nothing works but time to update

boot.asm

@@ -0,0 +1,61 @@
+[bits 16]
+section .text
+global _start
+
+_start:
+    mov [BOOT_DRIVE], dl    ; Save the boot drive number provided by BIOS
+
+    mov bp, 0x9000       
+    mov sp, bp
+
+    call load_kernel     ; Load extra sectors from the disk
+    call switch_to_pm    ; Transition to 32-bit mode
+    jmp $
+
+%include "gdt.asm"
+
+[bits 16]
+load_kernel:
+    mov bx, 0x7e00       ; Destination memory address for kernel code
+    mov dh, 30           ; Number of sectors to read
+    mov dl, [BOOT_DRIVE] 
+    mov ah, 0x02         ; BIOS read sectors function
+    mov al, dh           
+    mov ch, 0x00         
+    mov dh, 0x00         
+    mov cl, 0x02         ; Start reading from the second sector
+    
+    int 0x13             ; Trigger BIOS disk interrupt
+    
+    jc disk_error        
+    ret
+
+disk_error:
+    jmp $
+
+[bits 16]
+switch_to_pm:
+    cli                     
+    lgdt [gdt_descriptor]   
+    mov eax, cr0
+    or eax, 0x1             
+    mov cr0, eax
+    jmp CODE_SEG:init_pm    
+
+[bits 32]
+extern main
+init_pm:
+    mov ax, DATA_SEG
+    mov ds, ax
+    mov ss, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+
+    mov ebp, 0x90000        
+    mov esp, ebp
+
+    call main        
+    jmp $
+
+BOOT_DRIVE db 0