Hard Disk Failure and Data Recovery

By Leland Poliks

Hard Disk: An Introduction

Hard disk is a non-volatile data storage device that stores electronic data on a magnetic surface layered onto hard disk platters. Word Hard is use to differentiate it from a soft, or floppy disk. Hard disks hold more data and can store from 10 to more than 100 gigabytes, whereas most floppies have a maximum storage capacity of 1.4 megabytes and in addition are faster too.
Normally term hard disk is much familiar with computers only but it is widely used as network attached storage for large volume storage. Furthermore, appliance of hard disk drives spread out to video recorders, audio players, digital organizers, digital cameras, and even in latest cellular telephones.

Reynold Johnson invented the first hard disk in 1955 for IBM 305 computer with fifty 24 inch platters and total capacity of five million characters, and in 1956 - first commercial hard disk was launched with 5 megabyte capacity, the IBM 350 RAMAC disk drive. Within time frame of 50 years and rapid progress in technical enhancement, we have now reached to latest 2006 - First 750 GB hard drive from (Seagate) and First 200 GB 2.5" Hard Drive utilizing Perpendicular recording (Toshiba).

Heart of hard disk consists of four basic components:
The Platters: Platters are the actual disks inside the drive that store the magnetized data. Conventional platters are made of a light aluminum alloy and coated with magnetize-able material but latest technology uses glass or ceramic platters as they are thinner and also heat resisting. Most drives have at least two platters and the larger the storage capacity of the drive, the more platters there are.

The Spindle Motor: Hard disk drive consists of a spindle on which the platters spin at a constant RPM. Moving along and between the platters on a common arm are read-write heads. The platters in a drive are divided by disk spacers and are clamped to a revolving spindle that turns all the platters in a uniform motion. The spindle motor is built right into the spindle and rotates the platters at a constant set rate ranging from 3,600 to 7,200 RPM.

The Read/Write Heads: Read/write heads read and write data to the platters, and each head is fixed to a single actuator shaft so that all the heads move in harmony. Typically, only one of the heads is active at a time either reading or writing data. When not in use, the heads are inactive, but when in motion the spinning of the platters generate air pressure that lifts the heads off the platters. The space between the platter and the head is so minute that even one dust particle or a fingerprint could disable the spin. When the platters cease spinning the heads come to rest, at a preset position on the heads, called the landing zone.

The Head Actuator: All the heads are attached to a single head actuator arm, which moves the heads around the platters. The Actuator arm moves the heads on an arc across the platters as they spin, allowing each head to access almost the entire surface of the platter. Contemporary hard drives use a voice coil actuator, which controls the movement of a coil toward or away from a permanent magnet based on the amount of current flowing through it. Fundamental structures of all hard disk are same, and are composed of the same physical features, but their performance depends on the quality of their inner components.

Hard Disk Failure:
Hard Disk Failure occurs when a hard disk drive malfunctions and the accumulate data cannot be accessed. It may happen in the course of normal operation due to an internal or external factor.
Disk failure varies and the most common is "Head Crash" where the internal read and write head of a device touches a platter or magnetic storage surface often grinding away the magnetic surface. Head hover just micrometers from the platters plane which makes such collision a common one.

This sort of crash usually invites severe data loss and unprofessional data recovery attempts results further damage to the remaining data.
Hard drive also includes other controller electronics i.e., semiconductors, valves or electronic circuits, and major components such as Platters, Spindle Motor and Head Actuator. Failure of any these devices may cause a hard disk failure. Factors causes disk failure are numerous, yet most common are power surges, voltage fluctuations, electronic malfunction, physical shock, wear and tear, corrosion, exposure to high magnetic waves, sharp impact, high temperature exposure etc.

The phenomena of hard disk failure is raising higher and higher; as to increase the read and write speed, today we have latest hard disk rotating amazingly faster and this immense revolving speed generates massive centrifugal force, a single adverse cause in the course of normal operation can cause severe hard disk failure.

Hard Disk Data Recovery:
Hard disk data recovery is the process of recovering the trapped data from the damage hard disk device, when it can not be accessed in normal circumstance.

Several Techniques are used to retrieving data from damaged hard disk and techniques vary accordingly. It can be done by moving disk drive to a working CPU, or may have to open the disk drive and replace parts such as read/write heads, arms and chips and sometime the platters have to be removed and placed into another drive.

Physical damage can not be repaired by the general users, as it requires clean and dust free lab environment, in addition proper hardware and technical expertise; where under microscopic examination with proper tool and techniques, the damage drive is put on to observation for data salvaging.

In case of worse happening, do consult Data Recovery Service for saving your important data trapped within the damage device.

About the Author:

If you found this article interesting why don't you visit and read Leland Polik's other articles on his website the latest being on Basketball Drills For Beginners, and Youth Basketball Drills.

Online Computer Repair: Did You Ever Think There Might Come A Time When It Would Be More Beneficial If You Worked On It?

By Marilyn W. Cockerham

Do you recall the time when online computer repair seems like something you would see on Science Fiction channel rather than in real life? If you wanted it fixed, there were specialists that did that - only they had the know-how to do such a thing. There are some good things by fixing the computer by yourself - which you can do now. Some of those are that it saves you time, money, and gives you quality. This will greatly influence your bottom line as you will find it easy to make your computer repair experience easy and efficient.

In years past, you would need to load up your computer, the size of a small check-in suitcase, into your car and drive across town or to the next town to go to the computer repair shop. You might drop it off there, where the computer would get in line behind all of their other projects and not get touched for at least three to five business days. It felt like it took forever before it was fixed. Imagine the time you could save if you did not have to go anywhere, though. The reason you desire to think about this is because time is money and you want to make sure that you are not wasting one second.

Think of how much time you would save if YOU were the one who fixed the computer instead of someone else. Businesses have really taken to this news because now they can repair it on their time and keep operations going. Additionally, you could save money on gas, and gain money if you own a business by not having to stop all business until the computer is repairs. Our culture has fallen in love with this, especially since technology is all over the place.

The biggest plus is that you will be able to fix the exact problem much better than someone who does not know your computers as well as you do. This will speed up the process of getting the computer fixed and up and running again. The truth is no good businessman has time to spend on a computer guy who may or may not know what it is that he is doing.

If you are interested in the pluses that online computer repair can offer, make sure that you give it a shot. Keep in mind, it saves you time by not having to transport the computer somewhere and drop it off, money by not being out of commission for all those days, and the quality of the repair will be much higher.

About the Author:

Check out the best computer repair service at Online Computer Repair or you may also refer virus removal.

Suggestions to Understand and Survive the Blue Screen of Death

By David Dischler

Blue Screen of Death is a typical problem faced by most of the computer users working with Windows operating software. The computer related problem suddenly freezes the computer during Windows crash. A user is left staring at a blue screen full of rubbish. But you can always read and understand the blue screen in full to figure out the explanation for the computer related problem and learn the way to fix the issue in a faster and convenient demeanour. Here are a few tips on how to fix computers affected by the blue screen of death.

The top section of the screen carries the particular name of the blunder in capital fonts with individual words joined through underlines. A computer user acquainted with the inaccuracy name can simply identify the root of the issue. But a first time spectator of Blue Screen of Death will require some extra info and assistance to sort the problem.

The majority of these PC related issues also include the relevant text explaining the basic problem-fixing advice. You can simply restart the PC to continue your normal activities. The next section on the screen will offer you some additional tips to make sure that the hardware is installed properly and undo any fresh up-gradation of hardware or software.

The personal computer problem is always accompanied by a memory dump. The term refers to the particular file made by Windows to dump all types of data held by the system memory. Routinely, the file is saved on the local hard disk of your personal computers to be used for debugging purposes. The content of the file is also very much significant to repair the personal computers relates issue by availing technical help from Microsoft.

The base of the OS crash will be mentioned in a hexadecimal form at the Windows stop code part of the Blue Screen of Death. You may not read or decode the technical instructions mentioned through the mixing of numbers and letters, but the info will help an expert to pinpoint the precise cause of the crash.

About the Author:

David Dischler has been teaching others how to fix PCs for over 6 years. He has fixed many blue screen of death issues in that period of time.

What You Ought Know With Regards To Computer Freeze

By Linwood Butzer

There are a number of reasons that computers freeze up ranging from anything from a virus that is attacking the system to a computer being swamped with too many open programs and windows at once.

If you open up multiple browsers and run numerous programs all at once, they will require an awful lot of memory for the computer to process these functions. If you do not have enough memory to run all these things, it can cause the computer to lock up, and other times cause it to run slow.

People who regularly use many programs simultaneously should make sure their system has at least 2GB of memory available. If just using one or two programs, one gigabyte of memory should be sufficient.

Websites can also clog memory, especially those that are graphic intensive. This can also cause a computer to freeze, even with as little as 1GB of memory installed.

Emails and websites contain more graphics than ever before, and they need a lot of memory to work right. For your computer to run smooth and without stalls, the computer needs more memory at its disposal to process everything. However, things like word processing software usually does not take a lot of memory.

But, for frequent movie watchers, make certain that you have plenty of memory installed on your system. Computers that are short on memory will not play back the movie well.

Many times, computers will freeze up because there is not enough memory to go around and support all the programs running. However, there are times when you will access a website that is not fast, and that will slow your computer down too.

Not every website is up to speed and has the latest featured. When you get one that hasn't been updated for quite some time, your computer can freeze. An other contributing factor to this type of issue is that if the website gets overloaded with visitors, it can freeze also because it can't handle the amount of visitors at once.

About the Author:

Check out more of this writer's articles about items including carpet dry cleaning and professional carpet cleaning.

Preventing The Loss Of Important Data

By Jason Radtke

It's a known fact that computer system data is the livelihood of any organisation. No company can continue business in the event of total loss of information. The loss of information may also affect non-public people to a large extent. Imagine taking footage while on vacation at an international destination costing you thousands of dollars or losing photographs of a marriage that cannot be repeated.

Therefore preventing the loss of your valuable data should become a major concern. As Atlanta IT support, we are experts at the domain of recovering lost PC information and have been involved in almost all information loss scenarios. Though after losing your data, we can help you to recover your lost info. But sadly it's not always possible to help all our clients, as there are circumstances where storage media could be damaged outside the level of fixing or successful recovery. We trust this newsletter will assist you to prevent losing your data in the 1st place. We all understand by making backups will hinder you from losing info, but there are many main considerations and different options to stop the loss of information.

This document could be distributed readily. All our services are listed at the end of this document.

KEY POINTS

Make sure that your info is replicated on at least one other device that isn't attached to your computer/server that's been backed up in any way.

By making a backup of your information isn't really enough, you need to ensure the information that has been backed up IS WORKING!

Do not trust ANY software that reports a backup has been done successfully. The only way to ensure that data has been backed up effectively is to test the info. This is generally done by Test Revive Processes.

Use an efficient Antivirus solution.

Connect a UPS (Uninterruptible Power Supply) to all imperative computers/servers for defense against lightning and power rises.

Install the following advantages will be applicable:

Once the ZIP file is written to CD, test the file from CD as if you need to take the file. If the ZIP file displays the content of compressed files, all files will automatically be accessible.

The CD File System has many limitations such as; long file names, depth of directory trail and so on. By burning a single ZIP file, all restrictions will be ignored.

Time, capacity and number of CD's, will be beneficial.

Using DVD/CD's as a backing up solution is not advised as the media only lasts for a considerable number of years depending on manufacturer for example. The most effective solution for archiving info is explained under "Archiving Data".

MEMORY STICKS/Memory Cards

Please note, this storage device was designed mostly for transporting information from one PC to another, using it as a portable gizmo. A USB memory stick shouldn't be utilized for info backups and is not regarded as a reliable storage gizmo. Guarantee after using this device to safely unplug/remove the device prior to disconnecting the gadget. (Usually an icon with a green arrow bottom right on your screen)

It is also recommended not to store files on a memory stick by means of saving it to memory stick straight from inside a piece of software. Rather save files on your local disk and later copy the files to the device using Windows Explorer for example.

EXTERNAL DRIVES

External drives use different interfaces of connectivity like USB, Firewire, SATA, ESATA for example. USB is the slowest of them all. Though all PCs have the standard USB interface, to use most of the other interfaces, an interface card is required for connectivity. External drives are devices with standard desktop and notebook PC drives within the external casing. These drives are acceptable to use for data backups but should only be used as a further copy of your info.

In the event of electronic failure of the external case, there's a chance that the internal drive could be in perfect working order. This is going to be evaluated by removing the internal drive from the case, connecting the drive to a typical desktop computer, as a secondary drive. Please note by removing the drive from the case might affect your warrantee, but as we know the cost of the external device is hardly a comparison to the value of the info.

When using these drives for backup purposes, it is endorsed not to utilize a exclusive software application that is shipped with some of the external drives. Rather use standard Windows backup if. That's your Operating System of preference. Even better, create backup folder names by date and by hand copy required backup files as separate files & folders to the disk. Though much discipline is necessary for backups if no automated processes are established. By having readily accessible files as a backup is a far smaller risk than compressed single backup files.

About the Author:

Call Geeks On Call for Atlanta IT support. Outsource your IT Support to Geeks on Call Atlanta's premiere partner in Technology. We are a Microsoft Gold Partner and Small Company Expert. Our technicians carry a range of certifications including Microsoft Apple Comptia Ciso Novell and Allworx. Call us for Atlanta IT Consulting today.

Knowing Why Hard Disks Become Faulty

By Jason Sloan

If you have ever owned a PC or MAC which has failed, you know how frustrating, sometimes terrifying even, an experience that may be. Nonetheless if you are one of the lucky people to understand and see why your computer failed, there's a probability that you will be able to avoid such an occurrence in the future. Typically, the explanation why a PC or MAC failed is often because the hard drive fails. Failed hard disks can occur for a lot of reasons, but don't worry; simply because your drive has failed it does not imply the info on your personal computer is unavoidably lost.

These days one of the most common reasons for a hard drive to fail aside from a mechanical issue is a virus infection or a malicious software attack via the web. This may, over the course of time corrupt and destroy your hard drive as the virus or malware digs itself further and further into the operating system of your PC. Another common reason for a hard drive to fail is physical trauma. If you've a portable laptop and you bump it around a bit or fail to pack and transport it safely, your hard drive might be compromised. In addition, if you've got a desktop, be sure to keep your hard drive safe by placing it somewhere where it is away from any physical damage. One warning that your hard drive could have been compromised is a slowing down of the overall computer function over a period of time.

If you do suspect your drive of being damaged or corrupted, but your PC is still running, get it to a data recovery specialist as quickly as possible so you may be able to backup the software programs and user created documents saved on your PC. If you weren't able to backup before your PC fully stopped running, don't worry because there might still be hope. Frequently talented technicians such as those of a Data Recovery expert can do hard disk drive recovery and extract the crucial folders and info off them onto another storage device, for example an external hard drive, USB flash drive or DVD media. That way, you can simply copy that info back over onto your replacement computer.

Regardless of if your hard disk fails nevertheless you should ensure that it is wiped clean before it is taken to scrap. That way none of your personal or monetary data will stay on that actual drive.you can use a hard disk wiping service to look after this and make sure that none of your personal data is left on your old hard disk before it is disposed of.

Clearly, having a hard disk drive fail on you can be a stressful affair but with specialist help, it is possible to retrieve much or even all of the information stored on the computer's hard disk, so all isn't lost.

About the Author:

Jason Sloan runs a data recovery business called Kingdom Data Recovery Edinburgh who service all of the United Kingdom. He has got many articles on his website which refer to issues with storage and useful information about stopping data loss.

People Are Able Fix Computer Problems Alone Without Being Forced To Depend On The Geek Squad

By Daniel D. Sundquist

If you need to fix computer problems but do not know how to do it, do not worry, you can learn how. However, you do not need to take it to someone that will charge you hundreds of dollars for a fix that may or may not happen. You see, occasionally when you drop off your computer to get repaired by someone else, they often miss the diagnosis because they are not there on a daily, momentary basis to really understand the in and outs of the computer problem.

At times, it is easy to fix computer problems because it is straight forward and easy to diagnose. What if your printer and pc are not communicating? Simple: reinstall your printer software. It could be the peskiest problem of all: a slow computer. The answer there, especially if you have an older computer, is that you may not have enough free space on there to allow the computer to operate as it needs and when you free up the space, you problem begins to dissolve.

Not all issues are so straight forward and if that is the case only you truly know the ins and outs of the problems. It is definitely tough on businesses that rely on computers on a minute by minute basis to keep their revenue stream open. It was not that far into the past that there was only a business or two in town that could fix computer problems.

There are a number of computer issues that are not straight forward and do need special attention and detail. You used too have to go to someone to do this, but now you are able to do it yourself online when it is convenient for you. This has been received with a lot of joy by a lot of people - especially those who do not have the time to wait on the computer guy to get to their computer.

Do not fix computer problems the difficult way by wasting time and money on some computer guy that may or may not actually fix the problem. Increase your esteem on your own time to take the time and save the money to fix computer problems online and following step by step diagnosis and repair. Do not allow the sentiments of doubt creep in because it is possible to do this.

About the Author:

Get computer help with fix computer or virus removal.