lilo trouble log

LILO version 24.2 (released 22-November-2015)
  * Copyright (C) 1992-1998 Werner Almesberger  (until v20)
  * Copyright (C) 1999-2007 John Coffman  (until v22)
  * Copyright (C) 2009-2015 Joachim Wiedorn  (since v23)
This program comes with ABSOLUTELY NO WARRANTY. This is free software
distributed under the BSD License (3-clause). Details can be found in
the file COPYING, which is distributed with this software.

Warning: LBA32 addressing assumed
Reading boot sector from /dev/sda
Warning: '/proc/partitions' does not exist, disk scan bypassed
Warning: Unable to determine video adapter in use in the present system.
Using BITMAP secondary loader
Calling map_insert_data
Mapping bitmap file /boot/slack.bmp
Warning: Video adapter does not support VESA BIOS extensions needed for
  display of 256 colors.  Boot loader will fall back to TEXT only operation.
Calling map_insert_file

Boot image: /boot/vmlinuz -> vmlinuz-huge-4.4.118
Added Linux  *

Writing boot sector.
/boot/boot.0800 exists - no boot sector backup copy made.
4 warnings were issued.