diff --git a/kernel-rs/mk/grub.mk b/kernel-rs/mk/grub.mk
index 1444d67a..cb44a41e 100644
--- a/kernel-rs/mk/grub.mk
+++ b/kernel-rs/mk/grub.mk
@@ -6,5 +6,4 @@ $(grub-iso): $(kernel) $(grub-cfg) Makefile
 	@mkdir -p $(isodir)/boot/grub
 	@cp $(grub-cfg) $(isodir)/boot/grub
 	@cp $(kernel) $(isodir)/boot/$(OS)
-	@grub-mkrescue -o $@ $(isodir) 2>/dev/null
-	@printf "\r\033[38;5;117m✓ GRUB ==> $(grub-iso)\033[0m\033[K\n"
+	grub-mkrescue -o $@ $(isodir) 2>/dev/null
diff --git a/kernel-rs/src/arch/x86/boot.asm b/kernel-rs/src/arch/x86/boot.asm
index 72d057d8..ef54d30f 100644
--- a/kernel-rs/src/arch/x86/boot.asm
+++ b/kernel-rs/src/arch/x86/boot.asm
@@ -58,7 +58,7 @@ align 4096
 p2_table:
 	resb 4096
 stack_bottom:
-	resb 4096 * 3
+	resb 4096 * 4
 stack_top:
 
 section .gdt
diff --git a/kernel-rs/src/arch/x86/mod.rs b/kernel-rs/src/arch/x86/mod.rs
index 8cee6b38..6b68f857 100644
--- a/kernel-rs/src/arch/x86/mod.rs
+++ b/kernel-rs/src/arch/x86/mod.rs
@@ -33,23 +33,10 @@ pub unsafe extern "C" fn x86_rust_start(multiboot_info_addr: usize) {
     // set up physical allocator
     ::memory::init(&boot_info);
 
-    // let memory_map_tag = boot_info.memory_map_tag().expect("Memory map tag required");
-    // println!("memory areas:");
-    // for area in memory_map_tag.memory_areas() {
-    //     println!(
-    //         "    start: {:#x}, end: {:#x} length: {:#x}",
-    //         area.start_address(),
-    //         area.end_address(),
-    //         area.size()
-    //     );
-    // }
-    // flush!();
-    // asm!("hlt");
-
     // set up virtual addressing (paging)
     let mut active_table = paging::init(&boot_info);
 
-    // fill and load idt (exceptions + irqs)
+    // load idt (exceptions + irqs)
     idt::init();
 
     // set up heap
diff --git a/kernel-rs/src/lib.rs b/kernel-rs/src/lib.rs
index 020db3d2..c79a30fb 100644
--- a/kernel-rs/src/lib.rs
+++ b/kernel-rs/src/lib.rs
@@ -60,10 +60,9 @@ pub fn kmain() -> ! {
     //     *(0xdead as *mut u32) = 42;
     // };
 
-    // vga is specific to chipset not cpu
+    // vga is *not* cpu specific, chipset specific?
     vga::init();
 
-    // loop { keyboard::kbd_callback(); }
     loop {}
 }
 
@@ -81,7 +80,7 @@ pub extern "C" fn panic_fmt(fmt: core::fmt::Arguments, file: &'static str, line:
     loop {}
 }
 
-pub const HEAP_START: usize = (2 << 22); //third entry of p2
+pub const HEAP_START: usize = (1 << 22 + 2); //third entry of p2
 pub const HEAP_SIZE: usize = 10 * 4096 * 8; //~ 100 KiB
 
 #[global_allocator]