[CentOS] PXE booting UEFI

Good Afternoon,

As per the installation guide, section 30.2.2 I’ve created an efidefault file at /var/lib/tftpboot/pxelinux/pxelinux.cfg/efidefault

However, this file is never requested by the 64 bit PXE loader (bootx64.efi), as shown by tcpdump:

  75 RRQ "/pxelinux/42272635-0011-5053-ACF2-82A100E615F2" octet tsize 0 blksize 512
  59 RRQ "/pxelinux/01-00-50-56-A7-BA-BF" octet tsize 0 blksize 512
  47 RRQ "/pxelinux/C13F3F6E" octet tsize 0 blksize 512
  46 RRQ "/pxelinux/C13F3F6" octet tsize 0 blksize 512
  45 RRQ "/pxelinux/C13F3F" octet tsize 0 blksize 512
  44 RRQ "/pxelinux/C13F3" octet tsize 0 blksize 512
  43 RRQ "/pxelinux/C13F" octet tsize 0 blksize 512
  42 RRQ "/pxelinux/C13" octet tsize 0 blksize 512
  41 RRQ "/pxelinux/C1" octet tsize 0 blksize 512
  40 RRQ "/pxelinux/C" octet tsize 0 blksize 512
  49 RRQ "/pxelinux/efidefault" octet tsize 0 blksize 512

I’ve worked around this by placing a separate efidefault in the root of the pxelinux directory - however this is undesirable as this means I have to maintain separate configs for BIOS and UEFI.

Does anyone know why this is not behaving as documented?
	
Regards,

Adam Bishop
Systems Development Specialist

  gpg: 0x6609D460
    t: +44 (0)1235 822 245
 xmpp: adamb at jabber.dev.ja.net

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