diff --git a/boot/kernel.asm b/boot/kernel.asm
index 4f5fd03..7b82cf0 100644
--- a/boot/kernel.asm
+++ b/boot/kernel.asm
@@ -154,13 +154,6 @@ getint:	xor bx, bx
 sferr:	stc
 	ret
 
-bpb:	times bpb_len db 0
-drvnum:	db 0
-	align 4
-drvoff:	dd 0 ; partition offset
-drvpos:	dd 0 ; absolute physical sector number
-buffer:	times 512 db 0
-
 	; Convert between drive number and BIOS dl
 	; Bidirectional mapping
 	; 0 <-> 0, 1 <-> 1, 2 <-> 0x80, 3 <-> 0x81
@@ -300,3 +293,12 @@ ivects:	dw int20h, int21h, iret, iret
 	dw iret, iret, iret, iret
 	dw idle, fputc, iret, iret
 	dw iret, iret, iret, iret
+
+section .bss
+bpb:	times bpb_len resb 0
+drvnum:	resb 0
+	align 4
+drvoff:	resd 0 ; partition offset
+drvpos:	resd 0 ; absolute physical sector number
+buffer:	times 512 resb 0
+