diff --git a/packethardware/component/disk.py b/packethardware/component/disk.py
index f0d1411..630fda6 100644
--- a/packethardware/component/disk.py
+++ b/packethardware/component/disk.py
@@ -36,6 +36,10 @@ def __init__(self, lsblk):
         }
         self.lsblk["rota"] = self.data["rota"]
         self.lsblk["size"] = self.data["size"]
+        if "children" in self.lsblk:
+            for c in self.lsblk["children"]:
+                c["rota"] = c["rota"] if isinstance(c["rota"], str) else "1" if c["rota"] else "0"
+                c["size"] = str(c["size"])
 
         if self.__is_nvme():
             self.data["smart"] = utils.get_nvme_attributes(self.lsblk["name"])