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How to prevent physical CD-ROM from ejecting after installing or upgrading ESXi?

07.15.2019 by William Lam // Leave a Comment

While catching up on some news over the weekend, I had noticed a VMware Reddit thread asking a pretty interesting question on how to prevent the physical CD-ROM tray from ejecting after installing or upgrading ESXi? This behavior occurs whether you are using a physical CD-ROM media or a "Virtual" ISO image via an out-of-band interface like an iDRAC or iLO. If you are automating the installation or upgrade using Auto Deploy or network installation such as Kickstart, this is not a problem.

However, I was a bit surprised to hear that this was still a pain point in 2019, as many of the new servers in market do not even include an option for CD-ROM. Some of the suggestions really brought me back to the early 2000's including physically taping up the CD-DROM tray, which I have definitely seen customers doing but this is not a scalable solution and it requires a visit to the datacenter. 

One easy solution that I had suggested was to take advantage of ESXi's scripted installation capability also known as Kickstart and use the supported ESXi --noeject option after reboot. Since the install/upgrade was being done manually, the added benefit of this solution is that you can now have it automated 🙂 The other nice thing about this option is that you can specify the kickstart using the default ESXi ISO or you can take it a step further and embed the Kickstart with a custom ESXi ISO.

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Categories // Automation, ESXi Tags // cdrom, esxi, kickstart, ks.cfg, noeject

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William Lam is a Senior Staff Solution Architect working in the VMware Cloud team within the Cloud Infrastructure Business Group (CIBG) at VMware. He focuses on Cloud Native technologies, Automation, Integration and Operation for the VMware Cloud based Software Defined Datacenters (SDDC)

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