diff --git a/kaleid/kernel/init/init.c b/kaleid/kernel/init/init.c
index a0e978b..896c77e 100644
--- a/kaleid/kernel/init/init.c
+++ b/kaleid/kernel/init/init.c
@@ -22,6 +22,7 @@
 //  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
 //----------------------------------------------------------------------------//
 
+#include <extras/buf.h>
 #include <kernel/mboot.h>
 #include <kernel/panic.h>
 #include <kernel/sched.h>
@@ -150,8 +151,9 @@ noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic)
     MmInitHeap();
     PsInitSched();
 
-    KeStartPanic("Test Panic %x", 4);
+    pstest();
     
     // End this machine's suffering
+    BFlushBuf(BStdOut);
     KeCrashSystem();
 }
diff --git a/kaleid/kernel/ps/sched.c b/kaleid/kernel/ps/sched.c
index 4fdf459..665754a 100644
--- a/kaleid/kernel/ps/sched.c
+++ b/kaleid/kernel/ps/sched.c
@@ -81,10 +81,6 @@ void PsUnlockSched(void) {
 //
 // The four priority classes of OS/2
 //
-/*CREATE_PER_CPU(TimeCritProcs, ListHead_t *);
-CREATE_PER_CPU(ServPrioProcs, ListHead_t *);
-CREATE_PER_CPU(ReglPrioProcs, ListHead_t *);
-CREATE_PER_CPU(IdlePrioProcs, ListHead_t *);*/
 
 const char *PsPrioClassesNames[] = {
     "Time-critical class",
@@ -177,9 +173,6 @@ void PsSchedThisProc(Process_t *proc)
 //
 // Selects process to schedule next
 //
-// WARNING
-//      Does not call SchedLock()/SchedUnlock()
-//
 static Process_t *SelectSchedNext(void)
 {
     if (TimeCritProcs->length > 0)
@@ -293,7 +286,7 @@ leave:
     PsUnlockSched();
 
     if (PsCurProc != NULL && PsCurProc != previous) {
-        // XXX context switch
+        // dispatch & context switch
     }
 }
 
@@ -409,7 +402,7 @@ void pstest(void)
         KernLog("Tick %d - Running: ", tick);
 
         if (PsCurProc == NULL) {
-            KernLog("IDLE");
+            KernLog("IDLE\n");
         }
 
         else {
@@ -419,7 +412,7 @@ void pstest(void)
         PsSchedOnTick();
 
         if (tick == 50) // already done
-            KernLog("Re-scheduling process 0");
+            KernLog("Re-scheduling process 0\n");
 
         tick++;
     }
diff --git a/kaleid/libbuf/bprint.c b/kaleid/libbuf/bprint.c
index aeab335..9936b90 100644
--- a/kaleid/libbuf/bprint.c
+++ b/kaleid/libbuf/bprint.c
@@ -285,13 +285,21 @@ error_t vbprintf(Buffer_t *buf, const char *fmt, va_list ap)
             if (width < 12) width = 12;
         }
 
-        // Unknown/unsupported modifier
-        // Note: a '\0' after length field falls here
-        else {
+        // End of string too soon
+        else if (type == '\0') {
+            bputc(buf, '%');
             rc = EINVAL;
             break;
         }
 
+        // Unknown/unsupported modifier
+        else {
+            bputc(buf, '%');
+            bputc(buf, '?');
+            rc = bputc(buf, type);
+            continue;
+        }
+
         //
         // Numerical conversions
         //