Data Recovery - 4 Things You Should Know About Hard Drive Crashes

By: Sydney Johnson

As I talk to people about data recovery, I find that they certainly do not have all the facts. Most people are only aware of a few options for something as important as their data. If you are anything like me you store photo memories, work information, personal emails -- All those things that are hard to replace.

So, I've put together a list of 4 things EVERYBODY ought to know about data recovery.

1. Just because it was deleted does not mean it is gone forever.

When you lose important data, it is still possible to recover it. In fact, even if something has been written over, it may still be possible to recover that data. The US Department of Justice has said that a purposefully deleted piece of information, in many cases, has to be written over 7 or more times before it is completely gone. The bottom line here is that just because it may seem that it is gone, doesn't mean that it cannot be recovered.

2. Your Drive Will Wear Out.

Physical damage can occur to a hard drive because of mechanical failures such as motors going bad, or head crashes. Physical damage to the hard drive will almost always lead to data loss. In addition to the data loss, it is likely that damage to the logical structure of the hard drive will also occur. Most of the physical damage on a hard drive cannot be repaired by the end user. The mere opening of the hard drive in the normal environment can result in dust settling on the surface which results in further damage to the platters.

3. Data Loss Can Be Difficult in Many Ways.

Losing data from your hard drive can be devastating for many reasons. If you use the computer for business, perhaps all your client files, accounting files, etc. are there. For personal users, you may have your entire family photo album there, in addition to all family contact information. Perhaps there are important emails from family members stored on the computer. In any case, this information is extremely important to you. In addition to regular backup sessions a good data recovery software can be helpful. This software can be useful to a personal user, and it can help you to recover important data, and save you hundreds of dollars along the way. There are many to choose from, but you'll want to make sure what you buy can do what it says it will do.

4. Data Recovery Services are an Option.

When taking your hard drive to a specialist for data recovery, they will evaluate the drive and inform you of the problem, as well as the cost for recovery. Once you have this quote, you may think the price is too high. The real question you need to ask yourself then, is how important the data is. As I mentioned previously, there are data recovery software programs available, but if your data is very critical, you should consider the price quoted to you by the data recovery service. When you attempt to do it yourself, it will almost always lead to permanent loss of your data. A professional can recover most, if not all of the data in question. If your data is that important, then it is well worth the cost involved. Always remember too, that much of the headache can be avoided simply by backing up your data regularly. I can't tell you how many times this has saved my butt!

There you have it! 4 Things that everyone should know about data recovery. There are many more but I just wanted to touch on the most important.

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Do you know batteries is safety?

By: Johnxuster

I am a manufacturer which specialize in research, development, manufacturing & sales of all types of batteries such as laptop battery, camera battery, camcorder battery and others:www.power-battery.com.au.

When Sony introduced the first lithium-ion batteries in 1991, they knew of the potential safety risks. A recall of the previously released rechargeable metallic lithium batteries was a bleak reminder of the discipline one must exercise when dealing with this high energy-dense batteries system.

Pioneering work for the lithium batteries began in 1912 by G. N. Lewis. It was not until the early 1970's when the first non-rechargeable lithium batteries became commercially available.

Attempts to develop rechargeable lithium batteries followed in the eighties. These early models were based on metallic lithium and offered very high energy density. However, inherent instabilities of lithium metal, especially during charging, put a damper on the development.

The cell had the potential of a thermal run-away. The temperature would quickly rise to the melting point of the metallic lithium and cause a violent reaction. A large quantity of rechargeable lithium batteries sent to Japan had to be recalled in 1991 after the pack in a cellular phone released hot gases and inflicted burns to a man's face.

Because of the inherent instability of lithium metal, research shifted to a non-metallic lithium batteries using lithium ions. Although slightly lower in energy density, the lithium-ion system is safe, providing certain precautions are met when charging and discharging. Today, lithium-ion is one of the most successful and safe batteries chemistries available. Two billion cells are produced every year.

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How to Clean the Registry

By: Ray Geide

In the beginning Windows' registry consisted of two files totalling around 5mb in size. Today it consists of at least 12 files with the Software file itself being 30mb or bigger in size. As the size of the registry has exploded, so has the trash and clutter in it. It may seem like a daunting task, but cleaning the registry properly can fix system problems, speed your computer up, and make it run more efficiently.

I have spent many years developing and refining thousands of procedures to do just that. I could share these methods of hunting down the trash with you and let you find them and delete them by hand, but if you were to sit down at your computer right now and work nonstop, you would still be busy with them a week from now when the next issue of Ray's Computer Tips arrives. By then your registry would have new clutter and you would have to start all over again.

To make registry cleaning easier on everyone, I wrote a program called RegVac Registry Cleaner (http://regvac.com/regvac.htm) to perform those procedures. It has been so successful that several companies have asked me to model their registry cleaners after RegVac and even more have copied processes that first debutted in RegVac.

The first place RegVac cleans is the HKEY_CLASSES_ROOT section (the Classes Vac in RegVac does this). This section contains settings for the classes of Windows. Think of a huge box full of snakes and you will get an idea of how complicated and interwoven it is. It is so complicated that many registry cleaners bypass it or simply perform surface scans of it. RegVac uses over a hundred processes to follow each tentacle of each class deep into this area and make sure that they abide by the rules.

Next RegVac validates the entries in 22 lists with 7 different methods (the FilesList Vac does this). This is a minor part of RegVac but the bulk of most other registry cleaners even though they usually do not clean all 22 lists.

Another part of RegVac, the Software Vac, which is unique to RegVac, finds old software sections in the registry and provides a way to remove that software's entire branch. Other registry cleaners only remove a few entries in this area often leaving huge portions of the registry that do nothing but take up space and get in the way.

Even more trash can be discovered in hundreds of stashes used to store data you will never use. Most registry cleaners do not even touch these. The Stash Vac lists these stashes and lets you go through and select which ones to empty out. Please use caution when using the Stash Vac because some of the items listed there may be important. For example, one folder in the Stash Vac lists places where data for international keyboards are stored. You probably will never use the data for Bulgarian keyboards, so you can remove it, but if you live in the US you may experience problems after removing the United States 101 keyboard. The items that you can safely remove are usually obvious.

Last but not least, when cleaning the registry, you should look for broken links to files on the computer (this is what the Bad Link Vac does). If a file is referenced in the registry but it does not exist on your hard drive, that is a good indicator that something is wrong. Many programmers start out writing a registry cleaner thinking all it has to do is check for these broken links and remove them. In fact, that is all many registry cleaners do.

Even though that is all they do, they often don't do it correctly. If you check the results of such scans, you will find out that many of the broken links are really good links. I spent several months refining this part of RegVac so that as far as I know it is 100% accurate. Despite this, please realize that some software enter broken links in the registry and require them to be there in order for them to run. RegVac skips the ones it knows about, but you still need to be careful with this part of RegVac.

RegVac has six more tools that clean even more areas: the Add/Remove Editor, the System Config Utility, the OpenWith Editor, the AutoComplete Editor, the Junk Keys Editor, and Registry Backup, Pack, and Restore.

Many of you already use RegVac but if you don't, you can downloaded a free 30 day trial of RegVac at http://regvac.com/regvacz.exe. For more information about RegVac Registry Cleaner go to http://regvac.com/regvac.htm. If you like RegVac, you can purchase it for only $29.95. All future updates are free.

Keep the Windows registry clean and running smoothly with RegVac Registry Cleaner.

About The Author

Ray Geide writes a free weekly newsletter called Ray's Computer Tips and moderates a discussion board answering computer questions called Computer Q&A.

He is an experienced computer programmer who has been writing top-rated software for over a decade. Though he has written for some big-name companies, he prefers to write for his own company, Super Win Software, Inc. http://www.superwin.com/