Completely changed how XnoeOS boots, organised the code somewhat, renamed kernel32 to kernel, now uses the 9 sectors after the boot sector to store a 32 bit stage2 loader. No longer spends unnecessary time in real mode. Updated atapio to properly account for the reserved sector count.

src/boot_stage2/main.c

@@ -0,0 +1,17 @@
+#include "../kernel/atapio.h"
+#include "../kernel/screenstuff.h"
+
+
+void main() {
+    init_term();
+    init_atapio();
+
+    uint8_t* kernel_location = 0x80000;
+    load_file("KERNEL  BIN", kernel_location);
+
+    printf("Stage2 success!");
+
+    //while (1);
+
+    ((void(*)(void))kernel_location)();
+}

src/kernel/atapio.c

@@ -59,8 +59,8 @@ void init_atapio() {
   total_28_lbas = *(uint32_t*)(identify_result+60);
 
   // We've initialised now, let's load the FAT and RootDirEntries.
-  read_sectors(sectorsPerFAT * countFATs + 1, countRDEs / 16, rootDirEntries);
-  read_sectors(1, sectorsPerFAT, FAT1);
+  read_sectors(sectorsPerFAT * countFATs + countReserved, countRDEs / 16, rootDirEntries);
+  read_sectors(countReserved, sectorsPerFAT, FAT1);
 }
 
 void read_sector(uint32_t address, uint8_t* buffer) {
@@ -111,7 +111,7 @@ void load_file(char* filename, uint8_t* destination) {
 
   bool loaded = false;
   while (!loaded) {
-    uint16_t fromSector = location + (sectorsPerFAT * countFATs) + (countRDEs / 16) - 1;
+    uint16_t fromSector = location + (sectorsPerFAT * countFATs) + (countRDEs / 16) + (countReserved - 1) - 1;
     read_sector(fromSector, destination+offset);
     offset += 512;
 

src/kernel/atapio.h

@@ -6,7 +6,6 @@
 #include "io.h"
 #include "types.h"
 #include "strings.h"
-#include "screenstuff.h"
 
 void init_atapio();
 void read_sector(uint32_t address, uint8_t* buffer);

src/kernel/idt.c

@@ -3,7 +3,7 @@
 GateEntry idt[256];
 
 void set_entry(uint8_t interrupt_number, uint16_t code_segment, void* handler, uint8_t type) {
-  uint32_t handler_addr = (uint16_t)handler;
+  uint32_t handler_addr = (uint32_t)handler;
   uint16_t* handler_halves = (uint16_t*)&handler_addr;
   idt[interrupt_number] = (GateEntry){
     .offset_low = handler_halves[0],

src/kernel/kernel.c

@@ -13,9 +13,11 @@ int main() {
   printf("KERNEL32 OK!\n");
 
   printf("Hello, World!\n\nWe are running XnoeOS Code in C now, Protected Mode has been achieved and everything is working super nicely!\n\nHow wonderful!\n\nNow I just need to hope my print function works properly too~~\n");
-
+  
   init_keyboard();
+  
   enable_idt();
+  printf("A\n");
   init_atapio();
 
   uint8_t sector[512];