Category Archives: Operating Systems

Windows : Enable TRIM on your SSD drive

Using a SSD drive on Windows 7? You better have TRIM enabled for better performance and make your drive last longer. Windows should enable it by default. To check if it’s enabled, run the following command : fsutil behavior query DisableDeleteNotify If returned value is ” 0 “, this mean TRIM is enabled. If ”… Read More »

Linux : SpamAssassin high CPU usage, keep flipping between running and zombie state

You may notice those symptoms after updating SpamAssassin : – High CPU usage – spamd keep flipping between “running” and “zombie” state This probably mean your SpamAssassin installation is missing rule set configuration files. To resolve this issue, simply try running : sa-update Since this should have been automatically done at the installation or upgrade,… Read More »

Windows : Automatic login with domain account

This tutorial is about automatically login a user on domain with on a Windows 7 workstation. 1. Open the registry editor : Start > Run > regedit 2. Browse to : HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon 3. Turn on the auto logon key : AutoAdminLogon 1 4. Set… Read More »

Linux : How to rollback Yum updates on RHEL/CentOS

Having issues and downtime after installing latest updates using “yum update” is always a possibility. This is why having a development environment is so much important when you are running a mission critical infrastructure. However, there is an intermediate solution : using the rollback feature included in Yum. Note this option is actually not enabled… Read More »

Linux : Can’t create volume in OpenFiler

I rescently experienced this issue with OpenFiler which I never had before. Trying to create a volume into a block device simply don’t work – nothing happen when you click to do so. The only difference between this installation and the previous one is the OpenFiler system is installed on another drive/block device than the… Read More »