Data Recovery Bad Sectors
An Easy Explanation Of Data Recovery
Most industries have their own special language which is often filled with strange (to the rest of us) phrases and acronyms that make it sound like a totally foreign language and the data recovery industry is no different
Most of the time that you are exposed to what appears to be plain gibberish is when you actually need help and the last thing you want to do is to suddenly have a huge learning curve to simply understand what is being said to you.
Not picking on any camp in particular as most technical sectors have there own techno babble, but lets look at terms often used by data recovery services.
Data recovery jobs tend to fall into two distinct camps called logical and physical. The term physical is used to describe hard drive and media failures that can be classed as a mechanical failure of some sort but occasionally there is a crossover between the two.
Physical problems are as the term describes physical issues with either your drive or your storage media, and these are also often referred to as mechanical failures. Mechanical failures are often subject to hard drive repair which should be carried out in a special antistatic and dust free environment called a clean room (always check to see if the data recovery company has one).
Just as with any mechanical device if you keep on using it further damage can occur for example inside a hard drive is a reading/ writing arm (called read/write heads). If this comes into contact with the internal spinning drive (head crash) it creates debris which then causes further crashes and in extreme cases this cycle continues until the platter is destroyed beyond repair.
Logical problems tend to revolve around file loss or damage of some description and generally this is not as serious (or as costly) to recover although this may not be the case if somebody has made a bodged data recovery attempt. Generally the files and folders are still on the drive (even if they have been deleted or the drive has been formatted) somewhere but they can’t be seen or perhaps simply can’t be read as they may have become corrupted (file corruption) in some way.
One common problem that can manifest itself and is often a source of data loss is hard drive degradation, in simplistic terms this is where parts of the drive have simply lost the ability to be either written to or read from. The data on the drive may still be recoverable but it is just difficult to “see” so needs to be read using specialist tools.
Other logical failures if you want to learn more include for example lost files and folder, virus attacks causing damage to system files making it impossible to access data, destroyed file tables, corrupted files, bad MFT records possibly caused by boot sector viruses, partition errors, and the operating system not being able to access the drive in order for you to actually use the computer.
You can find more useful information about these and other data recovery issues at the data recovery companies website.
GBTV #603 (HD) | Data Recovery…I have bad sectors