diff --git a/plugins/sentinel/dashboard.html b/plugins/sentinel/dashboard.html
index d7bd24f..77214c3 100644
--- a/plugins/sentinel/dashboard.html
+++ b/plugins/sentinel/dashboard.html
@@ -276,8 +276,8 @@
           var procEl = card.querySelector('.proc-val');
           var sysData = n.system || {};
           if (loadEl && sysData.cpu) loadEl.textContent = (sysData.cpu.load_avg||[0,0,0]).map(function(v){return v.toFixed(1);}).join(' / ');
-          if (swapEl && sysData.swap) swapEl.textContent = (sysData.swap.percent||0).toFixed(1)+'% ('+(sysData.swap.used_gb||0).toFixed(1)+'G)';
-          if (diskEl && sysData.disk) diskEl.textContent = (sysData.disk.percent||0).toFixed(1)+'% ('+(sysData.disk.used_gb||0).toFixed(1)+'/'+(sysData.disk.total_gb||0).toFixed(1)+'G)';
+          if (swapEl && sysData.swap) { var st = sysData.swap.total_gb||0; swapEl.textContent = st > 0 ? (sysData.swap.percent||0).toFixed(1)+'% ('+(sysData.swap.used_gb||0).toFixed(1)+'G)' : '—'; }
+          if (diskEl && sysData.disk) { var dt = sysData.disk.total_gb||0; diskEl.textContent = dt > 0 ? (sysData.disk.percent||0).toFixed(1)+'% ('+(sysData.disk.used_gb||0).toFixed(1)+'/'+(sysData.disk.total_gb||0).toFixed(1)+'G)' : '—'; }
           if (tempEl && sysData.temperature) tempEl.textContent = (sysData.temperature.current||0) > 0 ? (sysData.temperature.current).toFixed(1)+'°C' : '—';
           if (trafEl && sysData.network) trafEl.textContent = '↓'+(sysData.network.rx_mb||0).toFixed(0)+'M ↑'+(sysData.network.tx_mb||0).toFixed(0)+'M';
           if (procEl && sysData.process) procEl.textContent = (sysData.process.memory_mb||0).toFixed(0)+'MB';