diff --git a/bootloader/bios/disk.asm b/bootloader/bios/disk.asm
index 1dbc359..9cb7cbf 100644
--- a/bootloader/bios/disk.asm
+++ b/bootloader/bios/disk.asm
@@ -42,4 +42,4 @@ read_error:
 
 read_error_string:		db ASCII_CARRIAGE_RETURN, ASCII_LINEBREAK, "ERROR! Disk read failed.", ASCII_END
 error_code_string:		db "Error code: ", ASCII_END
-sector_error_string:		db "Invalid number of sectors read!", ASCII_END
+sector_error_string:	db "Invalid number of sectors read!", ASCII_END
diff --git a/bootloader/bios/memory.asm b/bootloader/bios/memory.asm
new file mode 100644
index 0000000..874ca4e
--- /dev/null
+++ b/bootloader/bios/memory.asm
@@ -0,0 +1,5 @@
+; SRs to find memory size and leave it as a "note" for the kernel
+
+map_phys_mem:
+	int 0x15
+