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Table Of Contents
Required Files
In the PXE configuration file, you must include paths to the following files:
n mboot.c32 is the boot loader.
n boot.cfg is the boot loader configuration file.
See About the boot.cfg File
Filename for the PXE Configuration File
For the filename of the PXE configuration file, select one of the following options:
n 01-mac_address_of_target_ESXi_host. For example, 01-23-45-67-89-0a-bc
n The target ESXi host IP address in a hexadecimal notation.
n default
The initial boot file pxelinux.0 tries to load a PXE configuration file in the following order:
1 It tries with the MAC address of the target ESXi host, prefixed with its ARP type code, which is
01 for Ethernet.
2 If that attempt fails, it tries with the hexadecimal notation of target ESXi system IP address.
3 Ultimately, it tries to load a file named default.
File Location for the PXE Configuration File
Save the file in /tftpboot/pxelinux.cfg/ on the TFTP server.
For example, you might save the file on the TFTP server at /tftpboot/pxelinux.cfg/
01-00-21-5a-ce-40-f6. The MAC address of the network adapter on the target ESXi host is
00-21-5a-ce-40-f6.
Sample DHCP Configurations
To network boot the ESXi installer, the DHCP server must send the address of the TFTP or HTTP
server and the filename of the initial boot loader to the ESXi host.
When the target machine first boots, it broadcasts a packet across the network requesting
information to boot itself. The DHCP server responds. The DHCP server must be able to determine
whether the target machine is allowed to boot and the location of the initial boot loader binary.
For PXE boot, the location is a file on a TFTP server. For UEFI HTTP boot, the location is a URL.
Caution Do not set up a second DHCP server if your network already has one. If multiple DHCP
servers respond to DHCP requests, machines can obtain incorrect or conflicting IP addresses, or
can fail to receive the proper boot information. Talk to a network administrator before setting up a
DHCP server. For support on configuring DHCP, contact your DHCP server vendor.
VMware ESXi Installation and Setup
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