try to disable delete button on root disk

app/UI/Disk/Pages/DiskDataTable.php

@@ -126,6 +126,8 @@ class DiskDataTable extends DataTable implements ClientArea
         {
             if ($entity->getName() == 'disk-0') {
                 $rootDisk = true;
+            } else {
+                unset($rootDisk);
             }
             $data[] = [
                 "id"     => $entity->getId(),