Handle OSError during setup for System Monitor (#107396)

* Handle OSError during setup for System Monitor

* Clean string copy

* debug

---------

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

homeassistant/components/systemmonitor/util.py

@@ -25,6 +25,11 @@ def get_all_disk_mounts() -> set[str]:
                 "No permission for running user to access %s", part.mountpoint
             )
             continue
+        except OSError as err:
+            _LOGGER.debug(
+                "Mountpoint %s was excluded because of: %s", part.mountpoint, err
+            )
+            continue
         if usage.total > 0 and part.device != "":
             disks.add(part.mountpoint)
     _LOGGER.debug("Adding disks: %s", ", ".join(disks))