actually jump to 'kernel'

package.nix

@@ -11,7 +11,12 @@ in
     version = "0.1.0";
     src = ./.;
     buildPhase = ''
-      ${nasm}/bin/nasm boot.asm -o ${bootImg}
+      ${nasm}/bin/nasm boot.asm -o boot.bin
+      ${nasm}/bin/nasm kernel.asm -o kernel.bin
+
+      dd if=/dev/zero of=${bootImg} bs=512 count=2
+      dd if=boot.bin of=${bootImg} conv=notrunc
+      dd if=kernel.bin of=${bootImg} bs=512 seek=1 conv=notrunc
     '';
     installPhase = ''
       mkdir -p $out/bin
@@ -26,13 +31,10 @@ in
       cp $(echo $out)/bin/${bootImg} ./.bootler/${bootImg}
       chmod a+w ./.bootler/${bootImg}
 
-      echo "press any key to continue. Qemu will clear the screen..."
-      read -s -n 1
-
       # run image
       ${qemu}/bin/qemu-system-x86_64 \
         -nographic \
-        -hda ./.bootler/${bootImg}
+        -drive file=./.bootler/${bootImg},format=raw,index=0,media=disk
 
       # clean up
       rm ./.bootler -r