Category Archives: How-to

Creating Virtual Machines with Oracle VM VirtualBox

What is Virtualization?

Win7-XP

Virtual machines enable the user to run multiple guest systems on the same computer. This image shows a virtual machine with Windows XP installed, , referred to as the guest system, running on a Windows 7 host machine.

Several years ago, I wrote an article for this site about Microsoft Virtual PC, Microsoft’s implementation of virtualization technology for the Windows desktop. Virtualization software enables a computer to act as a host, running multiple computer sessions with different operating systems for the purpose of testing software, isolating specific programs from the rest of the software on the host machine or maintaining older operating systems as needed after an upgrade. Virtual PC was a somewhat simplified virtualization software which officially supported various versions of DOS and Windows and made the virtualization concept a little more accessible to the average user. With the release of Windows 8, it was succeeded by Hyper-V on machines with the necessary hardware requirements and Windows 8 editions.

Oracle VM VirtualBox

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HDMI to VGA: Using your VGA monitor on your HDMI laptop

Looks like the trusty old VGA interface is on its way out and while you’ll still see legacy systems and devices using this 25 year old standard for monitor connections, the newer laptops and computers are starting to pass on VGA connectors in favor of HDMI which, among its other benefits, allows for thinner devices. When I bought my new laptop computer, I never even thought to check if it had a VGA monitor port on it and, sure enough, it doesn’t. Instead, it has an Active HDMI port on the side. This wasn’t a problem until I tried connecting it to a projector during a meeting a few months ago and found out that projector’s HDMI interface didn’t work.

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Finally! Stop Facebook Videos from Playing Automatically …

A few months ago, Facebook introduced that “cool” new feature where videos your friends posted would automatically start playing as soon as you scrolled to them on your newsfeed. I don’t know why they thought this was a good idea or if it was part of their philosophy that people are incapable of choosing what they want to see without some kind of automation involved but they must have finally gotten enough complaints about it because there’s now a new feature that will stop it.

In your Settings panel (click the ∇ in the very top-right part of your FB page and choose “Settings”), click on Videos and then set the “Auto-Play Videos” setting to “Off”. That’s it! Now scroll through your news feed and verify that that videos are no longer automatically starting.

To disable auto-play on Facebook videos, select Videos on your Facebook Settings panel and set the "Auto-Play Videos" setting to "Off"

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