diff --git a/boot/cstuff.c b/boot/cstuff.c
index 10020064..9e06f182 100644
--- a/boot/cstuff.c
+++ b/boot/cstuff.c
@@ -389,9 +389,17 @@ int kmain() {
 	} while (1);
 
 	if (boot_mode == 0) {
-		multiboot_header.cmdline = (uintptr_t)"vid=auto,1024,768 root=/dev/ram0,nocache start=--migrate _start=session";
+		if (_debug) {
+			multiboot_header.cmdline = (uintptr_t)"logtoserial=3 vid=auto,1024,768 root=/dev/ram0,nocache start=--migrate _start=session";
+		} else {
+			multiboot_header.cmdline = (uintptr_t)"vid=auto,1024,768 root=/dev/ram0,nocache start=--migrate _start=session";
+		}
 	} else if (boot_mode == 1) {
-		multiboot_header.cmdline = (uintptr_t)"root=/dev/ram0,nocache start=--migrate _start=--vga";
+		if (_debug) {
+			multiboot_header.cmdline = (uintptr_t)"logtoserial=3 root=/dev/ram0,nocache start=--migrate _start=--vga";
+		} else {
+			multiboot_header.cmdline = (uintptr_t)"root=/dev/ram0,nocache start=--migrate _start=--vga";
+		}
 	}
 
 	if (!_normal_ata) {