diff --git a/nixos/hosts/steamdeck/disks.nix b/nixos/hosts/steamdeck/disks.nix
index fbf25b94..3490cb86 100644
--- a/nixos/hosts/steamdeck/disks.nix
+++ b/nixos/hosts/steamdeck/disks.nix
@@ -12,8 +12,8 @@
           BOOT = {
             priority = 1;
             name = "BOOT";
-            start = "0%";
-            end = "550M";
+            start = "0";
+            end = "550MB";
             type = "EF00";
             content = {
               type = "filesystem";
@@ -24,8 +24,8 @@
             };
           }; # partition 1 (ESP)
           ROOT = { 
-            start = "550M";
-            size = "100%";
+            start = "550MB";
+            end = "0";
             content = {
               type = "btrfs";
               extraArgs = [ "-f" ];