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Quick Tip - Automating ESXi 8.0 install using allowLegacyCPU=true

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For those looking to install ESXi 8.0 but have an unsupported CPU, the following kernel boot option allowLegacyCPU=true can be added which would bypass the installer pre-check as shown in the screenshot below.

When the ESXi installer bypass happens, instead of an error which forces you to reboot, you will get a warning message and user must acknowledge they understand they are using an unsupported CPU and then continue with the installation.

UPDATE (10/05/23) - ESXi 8.0 Update 2 requires CPU processors that support XSAVE instruction or you will not be able to upgrade and means you will hardware with a minimum of an Intel Sandy Bridge or AMD Bulldozer processor or later.

Note: For more information, also checkout my vSphere 8 Homelab considerations blog post for more tips and tricks.

For an interactive installation of ESXi, the additional acknowledgment is not an issue but for an automated installation of ESXi using Kickstart, this can be a problem since you are still required to manually hit enter before the installation actually begins. The question from a couple of my readers, is there a workaround for this?

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Quick Tip - Accessing new custom theme editor for ESXi 8.0 Host Client

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While looking over the vSphere 8 release notes, I had noticed there was also release notes for new version of the ESXi Embedded Host Client, which is an HTML 5 UI for accessing standalone ESXi host. The really interesting feature that stood out to me was the following:

Ability to change the user interface theme

Initially, I thought this was referring to the new "gray" theme which is the default when logging in.


I thought it was a bit strange to refer to this as being able to change user interface. What I did not realize was that the theme editor for the ESXi Host Client was actually hiding else where in the UI ... Thanks to Mark Gabbs for sharing the details!

UPDATE (10/12/22) - After publishing this blog post, I noticed a more detailed article was posted on the VMware Blog regarding the new ESXi Host Client 2, which includes even more new features such as markdown support for customizing the ESXi DCUI and Host Client login window.

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Automated vSphere & vSAN 8 Lab Deployment Script

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Continuing with the tradition of a new vSphere release, I have also released an update to my Nested ESXi Virtual Appliance to support the latest vSphere 8 release.

I know many of you are excited to get hands on experience with vSphere 8 and start exploring some of the new features and capabilities. To make it even easier to deploy, I have created an updated version of my vSphere and vSAN Lab Deployment script which you can find on my Github repo: Automated vSphere & vSAN 8 Lab Deployment Github Repo

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