diff --git a/ogclient/scripts/configureOs.py b/ogclient/scripts/configureOs.py
index 32fe8be..aa5bcc4 100755
--- a/ogclient/scripts/configureOs.py
+++ b/ogclient/scripts/configureOs.py
@@ -81,7 +81,7 @@ if 'Windows' == ostype:
 
 elif 'Linux' == ostype:
     # Marca para arranque.
-    boot_mark_file = f'/Part-{int(disk):02d}-{int(par):02d}'
+    boot_mark_file = f'{mntdir}/Part-{int(disk):02d}-{int(par):02d}'
     try:
         open (boot_mark_file, 'w').close()
     except Exception as e: