Monthly Archives: January 2009

Linux VM Guest Memory tuning

There is a sysctl option that I’ve found to help significantly when running Linux as a VMWare guest OS. It reduces the kernel’s tendency to page slightly (which helps significantly with slow virtual disk IO). vm.swappiness = 10 # default … Continue reading →

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Removing GRUB boot loader password protection

To remove the GRUB boot loader password from a Linux system, for whatever reason… Boot using a rescue CD/DVD. locate the grub.conf (/etc/grub.conf, /boot/grub/grub.conf, or somewhere else) remove the line that starts with “password –“ You can delete the line … Continue reading →

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Fixing a broken VMWare Linux guest in VMWare Player

So.. I was asked to correct a broken vmware guest (CentOS 4.7) that was being used in VMWare Player. it wouldn’t boot. Since VMWare Player has limited functionality – and since the person that built this guest was kind enough … Continue reading →

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