Month: April 2021

How to check CPU microcode revision in ESXi

Occasionally ESXi users want to check CPU microcode. You can check CPU microcode revision on running ESXi host this easy way.

[root@tanzu-esxi-1:~] vsish -e cat /hardware/cpu/cpuList/0 | grep -i -E 'family|model|stepping|microcode|revision'
   Family:0x06
   Model:0x25
   Stepping:0x01
   Number of microcode updates:0
   Original Revision:0x0000001f
   Current Revision:0x0000001f

More info: Using the ESXi 6.0 CPU Microcode Loading Feature