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Archives for : dos

PC ER: How-To Recover Data from a Damaged SD Card

Situation:

2GB SD card no longer registers as ‘visible’ to the digital camera and is barely readable within the Vista OS.

Potential Loss:

~1.5GB worth of photos and videos of Hong Kong.

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DOS: Bypassing the Cyclic Redundancy Check (and other) Errors

I was terribly busy working on a case this week. Many of the documents in the case were scanned in .TIF (also known as TIFF, Tagged Image File Format) format. So, browsing through the documents in this manner proved terribly inefficient and I didn’t have enough time to look into third party programs that might help me look through .TIF files faster. So, my solution was simple: I would take the CD full of sequentially numbered .TIF files and create a PDF out of them.

As I begun adding blocks of .TIF files to Adobe Acrobat, near the end of the disc, in the 6000’s, Acrobat would freeze up and hang and eventually result in a crash unless I ejected the disc. My assumption, was that certain files on the disc were corrupted either due to scratches or aluminum erosion/decay (they are very old discs).

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Why I Still Use DOS

For some of you, the thought of DOS probably brings back horrifying memories of things like IRQ conflicts, MSCDEX, the config.sys, himem.sys, etc. Those days are over, but the best aspects of DOS remain a part of Windows, fortunately.

Knowledge of DOS has been critical to my geeky endeavors over the last dozen or so years. Back in the nineties, as the GUI became pervasive and people seemed to have completely forgotten the command-line altogether, I continued to use it for a wide range of tasks. Yes, part of the reason I haven’t “let go” of DOS is in part nostalgic. The other part is that it has in fact been and remains very useful. Especially in troubleshooting and fixing low level problems that can’t be solved any other way.

So, you’re wondering what I could possibly have used DOS to accomplish? These days, for most things DOS can do, there is usually a free or paid application for Windows that does the same thing a little easier. Thing is, knowing how to do various tasks in DOS can help you repair Windows and perform a whole host of other tasks a lot quicker and often more efficiently than installing a bunch of different programs.

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