diff --git a/diagnostic/index.html b/diagnostic/index.html
index a09d2c0..4dadb76 100644
--- a/diagnostic/index.html
+++ b/diagnostic/index.html
@@ -132,12 +132,27 @@
     <div style="display:flex;align-items:center;gap:10px;flex-wrap:wrap;">
       <span id="disk-banner-icon" style="font-size:18px;">&#x26A0;&#xFE0F;</span>
       <span id="disk-banner-text" style="flex:1;min-width:200px;font-weight:600;"></span>
-      <code id="disk-banner-cmd" onclick="copyDiskCmd()" style="font-family:monospace;font-size:12px;padding:4px 8px;background:rgba(0,0,0,0.3);border-radius:4px;cursor:pointer;white-space:nowrap;">
-        docker system prune -a --volumes -f
-      </code>
-      <button onclick="copyDiskCmd()" class="btn secondary" style="padding:4px 10px;font-size:11px;">Kopieren</button>
+      <button onclick="copyDiskCmd('safe')" class="btn secondary" style="padding:4px 10px;font-size:11px;" title="docker builder prune -a -f && docker image prune -a -f">
+        Sicher aufraeumen
+      </button>
+      <button onclick="document.getElementById('disk-banner-aggressive').style.display=(document.getElementById('disk-banner-aggressive').style.display==='none'?'flex':'none')"
+              class="btn secondary" style="padding:4px 10px;font-size:11px;">
+        Mehr &#x25BE;
+      </button>
       <button onclick="document.getElementById('disk-banner').style.display='none'" class="btn secondary" style="padding:4px 10px;font-size:11px;">Schliessen</button>
     </div>
+    <!-- Aggressive Variante (erst nach Klick sichtbar) -->
+    <div id="disk-banner-aggressive" style="display:none;margin-top:10px;padding:8px;background:rgba(0,0,0,0.25);border-radius:4px;flex-direction:column;gap:6px;font-size:12px;">
+      <div>
+        <b>Sicher</b> (empfohlen) — Build-Cache + ungenutzte Images, keine Volumes:<br>
+        <code style="font-family:monospace;">docker builder prune -a -f && docker image prune -a -f</code>
+      </div>
+      <div style="color:#FFAA55;">
+        <b>Aggressiv</b> — zusaetzlich ungenutzte Volumes. <b>Nur wenn alle ARIA-Container laufen</b>, sonst riskierst du Daten-Verlust (Sessions, SSH-Keys, Shared):<br>
+        <code style="font-family:monospace;">docker system prune -a --volumes -f</code>
+        <button onclick="copyDiskCmd('aggressive')" class="btn secondary" style="padding:2px 8px;font-size:10px;margin-left:6px;">Kopieren</button>
+      </div>
+    </div>
   </div>
   <h1>ARIA Diagnostic</h1>
 
@@ -2205,19 +2220,17 @@
       banner.style.display = 'block';
     }
 
-    function copyDiskCmd() {
-      const cmd = document.getElementById('disk-banner-cmd').textContent.trim();
+    function copyDiskCmd(variant) {
+      const cmd = variant === 'aggressive'
+        ? 'docker system prune -a --volumes -f'
+        : 'docker builder prune -a -f && docker image prune -a -f';
       navigator.clipboard.writeText(cmd).then(() => {
         const btn = event.target;
         const old = btn.textContent;
         btn.textContent = 'Kopiert!';
         setTimeout(() => { btn.textContent = old; }, 1500);
       }).catch(() => {
-        // Fallback: selektieren
-        const range = document.createRange();
-        range.selectNode(document.getElementById('disk-banner-cmd'));
-        window.getSelection().removeAllRanges();
-        window.getSelection().addRange(range);
+        alert('Kopieren fehlgeschlagen — Befehl: ' + cmd);
       });
     }