Unix etc.

Unix, Linux and related technologies.

BL460c G7 Blade Cannot see NC542m Mezzanine Card

Posted on January 28, 2016 by Jim

This post explains how to install the mlx4 driver into ESXi 5.1 in order that it can see and communicate with the NC542m 2-port Ethernet adapter card. The card was fairly new (at the time) and ESXi 5.1 could not see it by default. Continue reading →

Linux does not see all memory

Posted on March 6, 2011 by Jim

The other day I upgraded the memory in a customer’s Linux system from 2 to 8 Gb. Afterwards though, only 4 Gb was “visible”. The “free” and “top” commands confirmed that only half the expected memory was there. The system was running 32 bit Red Hat 4.7 in a vmware virtual machine. Continue reading →