diff --git a/vlib/os/const.v b/vlib/os/const.v
index 25c5f7772c..cbee9d5918 100644
--- a/vlib/os/const.v
+++ b/vlib/os/const.v
@@ -1,70 +1,5 @@
 module os
 
-// Ref - winnt.h
-const (
-	SUCCESS = 0 // ERROR_SUCCESS
-	ERROR_INSUFFICIENT_BUFFER = 130
-)
-
-const (
-	FILE_SHARE_READ   = 1
-	FILE_SHARE_WRITE  = 2
-	FILE_SHARE_DELETE = 4
-)
-
-const (
-	FILE_NOTIFY_CHANGE_FILE_NAME   = 1
-	FILE_NOTIFY_CHANGE_DIR_NAME    = 2
-	FILE_NOTIFY_CHANGE_ATTRIBUTES  = 4
-	FILE_NOTIFY_CHANGE_SIZE        = 8
-	FILE_NOTIFY_CHANGE_LAST_WRITE  = 16
-	FILE_NOTIFY_CHANGE_LAST_ACCESS = 32
-	FILE_NOTIFY_CHANGE_CREATION    = 64
-	FILE_NOTIFY_CHANGE_SECURITY    = 128
-)
-
-const (
-	FILE_ACTION_ADDED              = 1
-	FILE_ACTION_REMOVED            = 2
-	FILE_ACTION_MODIFIED           = 3
-	FILE_ACTION_RENAMED_OLD_NAME   = 4
-	FILE_ACTION_RENAMED_NEW_NAME   = 5
-)
-
-const (
-	FILE_ATTR_READONLY                 = 0x1
-	FILE_ATTR_HIDDEN                   = 0x2
-	FILE_ATTR_SYSTEM                   = 0x4
-	FILE_ATTR_DIRECTORY                = 0x10
-	FILE_ATTR_ARCHIVE                  = 0x20
-	FILE_ATTR_DEVICE                   = 0x40
-	FILE_ATTR_NORMAL                   = 0x80
-	FILE_ATTR_TEMPORARY                = 0x100
-	FILE_ATTR_SPARSE_FILE              = 0x200
-	FILE_ATTR_REPARSE_POINT            = 0x400
-	FILE_ATTR_COMPRESSED               = 0x800
-	FILE_ATTR_OFFLINE                  = 0x1000
-	FILE_ATTR_NOT_CONTENT_INDEXED      = 0x2000
-	FILE_ATTR_ENCRYPTED                = 0x4000
-	FILE_ATTR_INTEGRITY_STREAM         = 0x8000
-	FILE_ATTR_VIRTUAL                  = 0x10000
-	FILE_ATTR_NO_SCRUB_DATA            = 0x20000
-	// FILE_ATTR_RECALL_ON_OPEN        = u32(0x...)
-	// FILE_ATTR_RECALL_ON_DATA_ACCESS = u32(0x...)
-)
-
-const (
-	FILE_TYPE_DISK = 0x1
-	FILE_TYPE_CHAR = 0x2
-	FILE_TYPE_PIPE = 0x3
-
-	FILE_TYPE_UNKNOWN = 0x0
-)
-
-const (
-	FILE_INVALID_FILE_ID = (-1)
-)
-
 // (Must be realized in Syscall) (Must be specified)
 // File modes.
 
@@ -86,34 +21,11 @@ const (
 	S_IFDIR = 0x4000 // directory
 )
 
-// Windows 
-const(
-	INVALID_HANDLE_VALUE = -1
-)
-
 const(
     STD_INPUT_HANDLE  = -10
     STD_OUTPUT_HANDLE = -11
     STD_ERROR_HANDLE  = -12
 )
 
-// https://docs.microsoft.com/en-us/windows/console/setconsolemode
-const (
-    // Input Buffer
-    ENABLE_ECHO_INPUT                  = 0x0004
-    ENABLE_EXTENDED_FLAGS              = 0x0080
-    ENABLE_INSERT_MODE                 = 0x0020
-    ENABLE_LINE_INPUT                  = 0x0002
-    ENABLE_MOUSE_INPUT                 = 0x0010
-    ENABLE_PROCESSED_INPUT             = 0x0001	
-    ENABLE_QUICK_EDIT_MODE             = 0x0040
-    ENABLE_WINDOW_INPUT                = 0x0008
-    ENABLE_VIRTUAL_TERMINAL_INPUT      = 0x0200
-    // Output Screen Buffer
-    ENABLE_PROCESSED_OUTPUT            = 0x0001
-    ENABLE_WRAP_AT_EOL_OUTPUT          = 0x0002
-    ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004
-    DISABLE_NEWLINE_AUTO_RETURN        = 0x0008
-    ENABLE_LVB_GRID_WORLDWIDE          = 0x0010
-)
-// End Windows
+
+
diff --git a/vlib/os/const_windows.v b/vlib/os/const_windows.v
new file mode 100644
index 0000000000..e2f453fa0d
--- /dev/null
+++ b/vlib/os/const_windows.v
@@ -0,0 +1,97 @@
+module os
+
+// Ref - winnt.h
+const (
+	SUCCESS = 0 // ERROR_SUCCESS
+	ERROR_INSUFFICIENT_BUFFER = 130
+)
+
+const (
+	FILE_SHARE_READ   = 1
+	FILE_SHARE_WRITE  = 2
+	FILE_SHARE_DELETE = 4
+)
+
+const (
+	FILE_NOTIFY_CHANGE_FILE_NAME   = 1
+	FILE_NOTIFY_CHANGE_DIR_NAME    = 2
+	FILE_NOTIFY_CHANGE_ATTRIBUTES  = 4
+	FILE_NOTIFY_CHANGE_SIZE        = 8
+	FILE_NOTIFY_CHANGE_LAST_WRITE  = 16
+	FILE_NOTIFY_CHANGE_LAST_ACCESS = 32
+	FILE_NOTIFY_CHANGE_CREATION    = 64
+	FILE_NOTIFY_CHANGE_SECURITY    = 128
+)
+
+const (
+	FILE_ACTION_ADDED              = 1
+	FILE_ACTION_REMOVED            = 2
+	FILE_ACTION_MODIFIED           = 3
+	FILE_ACTION_RENAMED_OLD_NAME   = 4
+	FILE_ACTION_RENAMED_NEW_NAME   = 5
+)
+
+const (
+	FILE_ATTR_READONLY                 = 0x1
+	FILE_ATTR_HIDDEN                   = 0x2
+	FILE_ATTR_SYSTEM                   = 0x4
+	FILE_ATTR_DIRECTORY                = 0x10
+	FILE_ATTR_ARCHIVE                  = 0x20
+	FILE_ATTR_DEVICE                   = 0x40
+	FILE_ATTR_NORMAL                   = 0x80
+	FILE_ATTR_TEMPORARY                = 0x100
+	FILE_ATTR_SPARSE_FILE              = 0x200
+	FILE_ATTR_REPARSE_POINT            = 0x400
+	FILE_ATTR_COMPRESSED               = 0x800
+	FILE_ATTR_OFFLINE                  = 0x1000
+	FILE_ATTR_NOT_CONTENT_INDEXED      = 0x2000
+	FILE_ATTR_ENCRYPTED                = 0x4000
+	FILE_ATTR_INTEGRITY_STREAM         = 0x8000
+	FILE_ATTR_VIRTUAL                  = 0x10000
+	FILE_ATTR_NO_SCRUB_DATA            = 0x20000
+	// FILE_ATTR_RECALL_ON_OPEN        = u32(0x...)
+	// FILE_ATTR_RECALL_ON_DATA_ACCESS = u32(0x...)
+)
+
+const (
+	FILE_TYPE_DISK = 0x1
+	FILE_TYPE_CHAR = 0x2
+	FILE_TYPE_PIPE = 0x3
+
+	FILE_TYPE_UNKNOWN = 0x0
+)
+
+const (
+	FILE_INVALID_FILE_ID = (-1)
+)
+
+const(
+	INVALID_HANDLE_VALUE = -1
+)
+
+const(
+    STD_INPUT_HANDLE  = -10
+    STD_OUTPUT_HANDLE = -11
+    STD_ERROR_HANDLE  = -12
+)
+
+// https://docs.microsoft.com/en-us/windows/console/setconsolemode
+const (
+    // Input Buffer
+    ENABLE_ECHO_INPUT                  = 0x0004
+    ENABLE_EXTENDED_FLAGS              = 0x0080
+    ENABLE_INSERT_MODE                 = 0x0020
+    ENABLE_LINE_INPUT                  = 0x0002
+    ENABLE_MOUSE_INPUT                 = 0x0010
+    ENABLE_PROCESSED_INPUT             = 0x0001	
+    ENABLE_QUICK_EDIT_MODE             = 0x0040
+    ENABLE_WINDOW_INPUT                = 0x0008
+    ENABLE_VIRTUAL_TERMINAL_INPUT      = 0x0200
+    // Output Screen Buffer
+    ENABLE_PROCESSED_OUTPUT            = 0x0001
+    ENABLE_WRAP_AT_EOL_OUTPUT          = 0x0002
+    ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004
+    DISABLE_NEWLINE_AUTO_RETURN        = 0x0008
+    ENABLE_LVB_GRID_WORLDWIDE          = 0x0010
+)
+