pxeboot with amd64 vs i386

Robert Watson rwatson at FreeBSD.org
Wed May 17 10:14:29 PDT 2006

I have my first SMP amd64 box at the office now to work with, and thought it 
was all going to be easy.  Sadly not, or at least, not yet. :-)

I configured dhcpd, tftpd, and nfs to export the 6.1 install CD from my 
notebook.  All good so far.  The problem is as follows: if I insert the 6.1 
i386 release CD, it all works great.  If I insert the amd64 CD, then I get the 
following after pxeboot has been going for a bit:

(root at bloom.cse.buffalo.edu, Sun May  7 02:16:38 UTC 2006)
Can't work out which disk we are booting from.Guessed BIOS device 0xffffffff not found by probes, defaulting to 
can't load 'kernel'

At that point, lsdev shows the disk devices, but not the pxeboot "disk", which 
leaves me without a kernel, etc.  So something is different between the i386 
and amd64 disks, or maybe there's a problem with my BIOS.  I was wondering if 
anyone else had set up a similar configuration and had it work?

Robert N M Watson

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