```patch
diff --git a/pyanaconda/ui/gui/spokes/lib/custom_storage_helpers.py
b/pyanaconda/ui/gui/spokes/lib/custom_storage_helpers.py
index e095fee..a3d7aa9 100644
--- a/pyanaconda/ui/gui/spokes/lib/custom_storage_helpers.py
+++ b/pyanaconda/ui/gui/spokes/lib/custom_storage_helpers.py
@@ -355,7 +355,9 @@ class ConfirmDeleteDialog(GUIObject):
rootName = rootName.replace("_", "__")
self._removeAll.set_label(
C_("GUI|Custom Partitioning|Confirm Delete Dialog",
- "Delete _all other file systems in the %s root as well.")
+ "Delete _all other file systems in the %s root as well, "
+ "including those used by other installed operating "
+ "systems.")
% rootName)
self._removeAll.set_sensitive(rootName is not None)
```
This is about as much as is warranted in my opinion.
--
To view this pull request on github, visit
https://github.com/rhinstaller/anaconda/pull/377