Renowned as the creator of the acclaimed Petri IT Knowledgebase back in 1999 Daniel Petri has become a distinguished figure in the IT realm, recognized for delivering reliable, expertise-driven content. This website - www.petri.com - not only embodies Daniel's extensive technical skills but also stands as a symbol of his dedication to sharing knowledge and guiding professionals through the dynamic world of information technology.
Over the past 25 years, Daniel Petri's career is characterized by his unwavering commitment to quality IT training, provision of diverse solution architectures, and maintaining a customer-first approach that ensures high levels of satisfaction. Daniel's client-centric mindset has always been a cornerstone of his career, delivering concrete results that spur his clients' growth and success. Daniel's strong technical writing skills are evidenced by the thousands of technical documents, help guides, manuals, and articles he has penned, all drawing from his broad IT and security-oriented background.
Daniel is currently Senior Training Manager at Semperis.

Last Update: Nov 19, 2024
This tutorial shows you how to use free hard drive partition tools and utilities. Safely divide your HD into several paritions for the installation of an alternate operating system or to separate data from the OS itself. Ten different free tools are featured.

Last Update: Sep 04, 2024
Windows 7, Microsoft’s upcoming client operating system, has some nice UI improvements. Some of these were discussed in our previous articles. In this article, MVP Daniel Petri will show you how to easily and quickly change screen resolution in Windows 7.

Last Update: Sep 04, 2024
Windows Vista (and Windows Server 2008 and even Windows 7 for that matter) are configured so that after the installation completes and the user first logs on, the desktop is totally empty from any icons, and only the Recycle bin is present. While this setup might fit some users, most users want control over their old desktop icons. In this article, MVP Daniel Petri will show you how to do that.

Last Update: Sep 04, 2024
Windows 7 (currently in beta) has a bunch of cool new capabilities that might come in handy for a lot of users. Some good, some bad, some a welcome change, others are a thing to get used to, in this article, MVP Daniel Petri will walk you through some of the new features found in the Windows 7 taskbar.

Last Update: Jul 07, 2025
Working with the Command Prompt is one of an IT Professional’s required skills. In previous Windows operating systems, one could drag and object to an open Command Prompt window in order to ease our work. Somehow, this useful feature wend away in Windows Vista and Windows Server 2008. In this article by Daniel Petri, we’ll see if we get it back in Windows 7.

Last Update: Jul 29, 2025
In Windows 7 (currently in beta), Problem Steps Recorder is a new feature that will record each and every step a user takes and document the entire operation in both screen captures and step-by-step details. It will save the resulting capture in a ZIP file allowing the user to easily send it by e-mail or file share to a support professional. In this article, MVP Daniel Petri will walk you through using this cool tool.

Last Update: Dec 03, 2024
ObserveIT is a software that is designed from the ground up to be deployed in multi-server enterprise environments and provides visibility into all user activity such as Microsoft Terminal Services, Citrix (ICA) including published applications, Remote Desktop (RDP), PC-Anywhere, VNC and NetOP…

Last Update: Nov 19, 2024
Hyper-V is a hypervisor-based technology that is a key feature of Windows Server 2008, and provides a scalable, reliable, and highly available virtualization platform. It provides scalability and high performance by supporting features like guest multi-processing support and 64-bit guest and host support; reliability and security through its hypervisor architecture; flexibility and manageability by supporting…

Last Update: Nov 19, 2024
In today’s shifting IT world many organizations has servers hosting applications for both internal and customer-facing applications. These servers are managed and accessed by multiple staff members and in some cases, accessible by external vendor contractors as well. While a lot of money was invested in protecting these servers from malicious users and other types…

Last Update: Sep 04, 2024
Just released, Train Signal is offering a brand new Cisco CCNA Security Training (IINS 640-553) course by Chris Bryant, CCIE. This 13 hour video training course will cover everything you need to pass the Cisco CCNA Security certification exam (IINS 640-553). I have watched many Chris Bryant videos and, trust me, he is one of…

Last Update: Dec 03, 2024
On this page I will describe the 4 variants or options that one has when connecting a home or small office network to the Internet via an ADSL or Cable modem. Carefully read the pros and cons of each method and decide what’s best for you. In this page I will not go into PC…

Last Update: May 24, 2025
Before you can introduce Windows Server 2008 domain controllers into existing Windows 2000 or Windows Server 2003 domains, you must prepare the forest and domains with the ADPREP utility. ADPREP.exe is a command-line tool that extends the Active Directory schema, and updates permissions as necessary to prepare a forest and domain for a domain controller…