diff --git a/default_pfx.py b/default_pfx.py
index 7985cd8c..084ee794 100755
--- a/default_pfx.py
+++ b/default_pfx.py
@@ -70,6 +70,14 @@ def setup_dll_symlinks(default_pfx_dir, dist_dir):
                 os.unlink(filename)
                 make_relative_symlink(target, filename)
 
+#steampipe can't handle filenames with colons, so we remove them here
+#and restore them in the proton script
+def fixup_drive_links(default_pfx_dir):
+    for walk_dir, dirs, files in os.walk(os.path.join(default_pfx_dir, "dosdevices")):
+        for dir_ in dirs:
+            if ":" in dir_:
+                os.remove(os.path.join(walk_dir, dir_))
+
 def make_default_pfx(default_pfx_dir, dist_dir, runtime):
     local_env = dict(os.environ)
 
@@ -93,6 +101,7 @@ def make_default_pfx(default_pfx_dir, dist_dir, runtime):
 
         env=local_env, check=True)
     setup_dll_symlinks(default_pfx_dir, dist_dir)
+    fixup_drive_links(default_pfx_dir)
 
 if __name__ == '__main__':
     import sys
diff --git a/proton b/proton
index 0a02990b..b1c87981 100755
--- a/proton
+++ b/proton
@@ -405,6 +405,12 @@ class CompatData:
             if not os.path.exists(self.prefix_dir + "/user.reg"):
                 self.copy_pfx()
 
+            if not os.path.lexists(self.prefix_dir + "/dosdevices/c:"):
+                os.symlink("../drive_c", self.prefix_dir + "/dosdevices/c:")
+
+            if not os.path.lexists(self.prefix_dir + "/dosdevices/z:"):
+                os.symlink("/", self.prefix_dir + "/dosdevices/z:")
+
             # collect configuration info
             if "STEAM_COMPAT_CLIENT_INSTALL_PATH" in os.environ:
                 #modern steam client sets this