Re: PXE booting UEFI

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IIRC the line
  49 RRQ "/pxelinux/efidefault" octet tsize 0 blksize 512
In the output below means look in
/var/lib/tftpboot//pxelinux/efidefault
Not
/var/lib/tftpboot//pxelinux/pxelinux.cfg/efidefault
i.e. it is rooted at the root of your tftpboot structure.

Even when this disclaimer is not here:
I am not a contracting officer. I do not have authority to make or modify the terms of any contract.


> -----Original Message-----
> From: Adam Bishop [mailto:Adam.Bishop@xxxxxx]
> Sent: Monday, April 14, 2014 10:57 AM
> To: centos@xxxxxxxxxx
> Subject:  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@xxxxxxxxxxxxxxxxx
> 
> Janet, the UK's research and education network.
> 
> 
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