Trying to make a PXE install

Question

Hi, I want to learn how to make a PXE install and  I am using Virtualbox for that.
I read the wiki but I can't make it work.
I think the mistake is in my dhcp config file. See:
#option definitios common to all supported networks...
option domain-name "example.org";
option domain-name-servers ns1.example.org, ns2.example.org:
default-lease-time 600;
max-lease-time 7200;
#Use this to enable / disable dynamic dns updates globally
ddns-update-style none;
#if this DHCP server is the official DHCP server for the local
#network, teh authoritative directive should be uncommented
authoritative;
#Use this to send dhcp log messages to a different log file
log-facility local7;
#No service will be given on this subnet, but declaring it helps the
#DHCP server to understand the network topology.
subnet 192.168.0.0 netmask 255.255.255.0 {
allow bootp;
filename "pxelinux.0";
next-server 192.168.0.1
#This is a very basic subnet declaration
subnet 10.254.239.0 netmask 255.255.255.224 {
range 10.254.239.10 10.254.239.20;
option routers rtr-239-0-1.example.org, rtr-239-0-2.example.org;
#This declaration allows BOOTP clients to get dynamic addresses
subnet 10.254.239.32 netmask 255.255.255.224 {
range dynamic-bootp 10.254.239.10 10.254.239.60;
option broadcast-addres 10.254.239.31;
option routers rtr-239-32-1.example.org;
#a slightly different configuration for an internal subnet
subnet 10.5.5.0 netmask 255.255.255.224 {
range 10.5.5.26 10.5.5.30;
option domain-name-servers ns1.internal.example.org;
option domain-name "internal.example.org";
option routers 10.5.5.1;
option boradcast-address 10.5.5.31;
default-lease-time 600;
max-lease-time 7200;
Any idea?
Thanks

Answer 1

Also, it's possible he has a bad drive. If he's been experiencing issues, and it's culminated in an unbootable machine, it could be a hardware failure, rather than a bad OS X install. If Disk Utility, Safe Boot, and fsck/fsck_hfs can't sort out his drive, it might be best to haul it to an Apple Store to have them inspect its components (unless you want to invest in something like Disk Warrior ⇪ first).