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Showing posts from August, 2007

Install any Linux distro directly from hard disk without burning any DVD

After you download any Linux distro from the internet, you have to burn it to a DVD, CD or a number of CDs to install it. That CD or DVD is generally used only once after which it lies unused , and worse, almost every Linux distro comes up with a new release every 6 months. So if you are in the habit of upgrading to every new version, you must have dozens of CDs lying at the bottom of your drawer. What a wastage of CDs! But with a little trick you can install any Linux directly from the hard disk without burning a single CD or DVD. The prerequisite of this trick is to have an operating system already installed on your computer. This is obvious because unless you are able to boot into your machine, you can't install anything; and we are not going to boot from the Linux disk because we aren't burning any. Here I'm going to focus on Microsoft Windows as the pre installed operating system.

Remove Exif data from digital images from your camera

What is Exif data? Exchangeable image file format (official abbreviation Exif, not EXIF) is a specification for the image file format used by digital cameras. The specification uses the existing JPEG, TIFF Rev. 6.0, and RIFF WAVE file formats, with the addition of specific metadata tags. The metadata tags stores a wide range of information about the picture shot and the camera with which the picture was shot. Some information that get stored along with the image includes

1 Gigabyte is Not Equal to 1024 Megabytes

If you pick up any computer book or dictionary and look up the term Gigabyte, you will find it defined as “1 gigabyte is equal 1024 megabytes”. Similarly, 1 Megabyte is defined as being equal to 1024 kilobytes, and 1 kilobytes as equal to 1024 bytes. That’s what we have been taught and that’s what we believe to be true. But that definition of gigabyte, megabyte and kilobyte has changed nearly 8 years ago.

Why recordable CD/DVD does not last long?

You must have noticed that the DVDs and CDs you burn at home to backup your favorite data becomes unreadable, even though you might have done nothing more than burn and store it. However, the factory made CDs that you buy last for years and read just as new. That’s because there is a huge difference between factory made CDs and home burnt recordable CDs, but most people are unaware of it.

Set CPU Affinity: Improve multitasking

What is CPU Affinity? Simply stated, CPU affinity is the tendency for a process to run on a given CPU as long as possible without being moved to some other processor. When we run an application on a dual-core processor, usually both the cores get used depending on whether the application is multi threaded or not and how efficiently Windows distributes the threads between the 2 cores.


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