Fixed SYSLINUX installation

.bin/Scripts/build-ufd

@@ -92,6 +92,13 @@ if __name__ == '__main__':
       ufd_label=UFD_LABEL,
       )
 
+    # Install syslinux (to partition)
+    try_and_print(
+      message='Syslinux (partition)...',
+      function=install_syslinux_to_partition,
+      partition=find_first_partition(ufd_dev),
+      )
+
     # Unmount UFD
     try_and_print(
       message='Unmounting UFD...',
@@ -99,10 +106,10 @@ if __name__ == '__main__':
       mount_point='/mnt/UFD',
       )
 
-    # Install syslinux
+    # Install syslinux (to device)
     try_and_print(
-      message='Installing Syslinux...',
-      function=install_syslinux,
+      message='Syslinux (device)...',
+      function=install_syslinux_to_dev,
       ufd_dev=ufd_dev,
       use_mbr=args['--use-mbr'],
       )

.bin/Scripts/functions/ufd.py

@@ -154,8 +154,8 @@ def hide_items(ufd_dev, items):
     run_program(cmd, check=False, shell=True)
 
 
-def install_syslinux(ufd_dev, use_mbr):
-  """Install Syslinux to UFD."""
+def install_syslinux_to_dev(ufd_dev, use_mbr):
+  """Install Syslinux to UFD (dev)."""
   cmd = [
     'dd',
     'bs=440',
@@ -168,6 +168,18 @@ def install_syslinux(ufd_dev, use_mbr):
   run_program(cmd)
 
 
+def install_syslinux_to_partition(partition):
+  """Install Syslinux to UFD (partition)."""
+  cmd = [
+    'syslinux',
+    '--install',
+    '--directory',
+    '/arch/boot/syslinux/',
+    partition,
+    ]
+  run_program(cmd)
+
+
 def is_valid_path(path_obj, path_type):
   """Verify path_obj is valid by type, returns bool."""
   valid_path = False