diff --git a/nixos/modules/virtualisation/amazon-grow-partition.nix b/nixos/modules/virtualisation/amazon-grow-partition.nix
index 31899fae6c0..44a9fa93e7e 100644
--- a/nixos/modules/virtualisation/amazon-grow-partition.nix
+++ b/nixos/modules/virtualisation/amazon-grow-partition.nix
@@ -39,7 +39,10 @@ in
     '';
 
     boot.initrd.postDeviceCommands = ''
-      [ -e /dev/xvda ] && [ -e /dev/xvda1 ] && TMPDIR=/run sh $(type -P growpart) /dev/xvda 1
+      if [ -e /dev/xvda ] && [ -e /dev/xvda1 ]; then
+        TMPDIR=/run sh $(type -P growpart) /dev/xvda 1
+        udevadm settle
+      fi
     '';
 
   };