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Table Of Contents
Create an Installer ISO Image with a Custom Installation or Upgrade Script
You can customize the standard ESXi installer ISO image with your own installation or upgrade
script. This customization enables you to perform a scripted, unattended installation or upgrade
when you boot the resulting installer ISO image.
See also Installing ESXi by Using a Script and About the boot.cfg File .
Prerequisites
n Linux machine
n The ESXi ISO image VMware-VMvisor-Installer-x.x.x-XXXXXX.x86_64.iso,where
x.x.x is the version of ESXi you are installing, and XXXXXX is the build number of the installer
ISO image
n Your custom installation or upgrade script, the KS_CUST.CFG kickstart file
Procedure
1 Download the ESXi ISO image from VMware Customer Connect.
2 Mount the ISO image in a folder:
mount -o loop VMware-VMvisor-Installer-x.x.x-XXXXXX.x86_64.iso /
esxi_cdrom_mount
XXXXXX is the ESXi build number for the version that you are installing or upgrading to.
3 Copy the contents of esxi_cdrom to another folder:
cp -r /esxi_cdrom_mount/* /esxi_cdrom
4 Copy the kickstart file to /esxi_cdrom.
cp KS_CUST.CFG /esxi_cdrom
5 Modify the boot.cfg file in both /esxi_cdrom/efi/boot/boot.cfg (for UEFI boot) and /
esxi_cdrom/boot.cfg (for legacy BIOS boot) to specify the location of the installation or
upgrade script by using the kernelopt option.
You must use uppercase characters to provide the path of the script, for example,
kernelopt=runweasel ks=cdrom:/KS_CUST.CFG
The installation or upgrade becomes completely automatic, without the need to specify the
kickstart file during the installation or upgrade.
VMware ESXi Installation and Setup
VMware, Inc. 31