try to disable delete button on root disk

app/UI/Disk/Buttons/DeleteButton.php

@@ -30,6 +30,7 @@ class DeleteButton extends ButtonDataTableModalAction implements ClientArea
     {
         $this->initIds('deleteDiskButton');
         $this->setDisableByColumnValue("master", true);
+        $this->setDisableByColumnValue("root", true);
         $this->switchToRemoveBtn();
         $this->initLoadModalAction(new DeleteModal());
     }