"You’re looking for the 'VMware ESXi Custom ISO for Cisco UCS'," Raj instructed. "And here is the most important part—version matching. If your vCenter is 7.0 U3, you need the Cisco Custom ISO for 7.0 U3. If you mix a U2 ISO with U3 hardware drivers, you’ll get a PSOD (Purple Screen of Death) before the installer even loads."
Minutes later, the file was on Elias's laptop. He plugged his USB drive in and used Rufus to burn the ISO image. He walked over to the server rack, plugged the USB drive into the back of the blade server, and rebooted.
Method 1: Download from the VMware/Broadcom Support Portal (Recommended)
Choosing the right ISO
Follow these precise steps to get the correct image for your environment. Step 1: Check the Cisco Hardware Compatibility List (HCL) vmware esxi cisco custom iso top download
What is your current version?
Navigate to the tab and locate the specific server blade. Open the KVM Console for that blade. Use the Virtual Media menu to map the local ISO file.
There are two primary, trusted methods to acquire the official Cisco Custom ESXi ISO. Never download hypervisor images from third-party mirrors or torrent sites, as they pose severe security risks.
To download the Cisco Custom VMware ESXi ISO, you must access the following Broadcom's acquisition of VMware . These custom images are specifically pre-configured with the necessary drivers (such as the Cisco VIC Ethernet driver) required for proper installation and operation on Cisco UCS hardware. How to Download the Cisco Custom ISO "You’re looking for the 'VMware ESXi Custom ISO
Log into the web interface. Launch the KVM Console (HTML5 or Java version).
Use Rufus (Windows) or dd (Linux) to write the ISO to a USB drive. Ensure the USB is formatted as FAT32, not NTFS, because Cisco UCS servers use UEFI boot.
To download the VMware ESXi Cisco Custom ISO, you must access the Broadcom Support Portal for versions 8.x and lower, or the Cisco Software Download portal for versions 9.0 and higher Broadcom Community 1. For VMware ESXi 8.x and Lower
Always compare the MD5 or SHA256 checksum of your downloaded ISO file against the string provided on the Broadcom or Cisco download pages to prevent file corruption or tampering. If you mix a U2 ISO with U3
Elias filtered the search. Product: Unified Computing System (UCS). Software Type: VMware.
"Okay," Elias narrated. "I’m logged in. What am I looking for?"
Using the vendor-specific ISO ensures that all necessary Cisco drivers (VIC adapters, RAID controllers, etc.) are pre-loaded, saving you hours of troubleshooting and compatibility checks. ⏱️✅