The PXELINUX environment can be used for the target system to boot the OS installer. PXELINUX is part of SYSLINUX. Some versions of Linux might include an older version of PXELINUX.
You can obtain SYSLINUX at:
# mkdir /home/pxeboot
# cp /syslinux-directory/core/pxelinux.0 /home/pxeboot
Where syslinux-directory is where SYSLINUX has been extracted.
# mkdir /home/pxeboot/pxelinux.cfg
Under this directory you will create a default PXE configuration file. This procedure is described later in the process.