PXE-T01: File not found

Check configuration

DHCP

/etc/dhcp/dhcpd.conf

default-lease-time 3600;
max-lease-time 7200;

allow booting;
allow bootp;

option space pxelinux;
option pxelinux.magic code 208 = string;
option pxelinux.configfile code 209 = text;
option pxelinux.pathprefix code 210 = text;
option pxelinux.reboottime code 211 = unsigned integer 32;
option architecture-type code 93 = unsigned integer 16;

subnet 192.168.3.0 netmask 255.255.255.0 {
  option routers 192.168.3.1;             # our router
  range 192.168.3.25 192.168.3.50;

  option broadcast-address 192.168.3.255;
  option domain-name-servers 192.168.3.1; # our router, again
  filename "pxelinux.0";

  class "pxeclients" {
    match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";
    # bootp style option
    next-server 192.168.3.13;
    # DHCP style option
    option tftp-server-name "192.168.3.13";
    if option architecture-type = 00:07 {
      filename "grub/grubx64.efi";
    } else {
      filename "pxelinux.0";
    }
  }

}

TFTP

/etc/default/tftpd-hpa

TFTP_USERNAME="pi"
TFTP_DIRECTORY="/srv/tftpboot"
TFTP_ADDRESS=":69"
TFTP_OPTIONS="-l -a 0.0.0.0:69 -4 -v --secure"

Get logs

sudo journalctl -u tftpd-hpa

sudo less /var/log/syslog

sudo journalctl -u isc-dhcp-server

Possible reasons

• missing files

• wrong ownership

• symlinks