• What are the procedures for data recovery in the logical mode?
• I've formatted my hard drive, can the data be retrieved?
• What is the physical procedure?
• I can see burn marks on the electronic circuit board on the hard drive. Can I replace this board with another from an identical, working drive?
• While text processing, the Word file got deleted. Is there a way to recover it?
• D partition has been removed. There is no restore point in windows for this. Can the lost partition be saved?
• What's the difference between data recovery from pendrives and digital camera memory cards?

What are the procedures for data recovery in the logical mode?
The most common issues we have to deal with in the logical mode are denied access to the data or damaged data structure on an technically operational carrier. In order to keep the content intact, the device is connected via a special controller with write prevention (a back up sector copy of the carrier can also be made, but with capacities reaching 500 GB this might mean additional time and blocking a significant amount of space on the mirror disc). Once the device is secured this way, the disc is being scanned or undergoes an analysis of the logical surface of the drive. Based on the results of the procedures mentioned above, the amount of data that can be recovered is determined. Logs and listings of the data are being presented to the customer for verification and priority data assessment. After receiving the effects of the verification, specific data is being targeted and it's integrity checked. The more the data the higher the price of recovery will be. Here the most expensive and time consuming task is the verification of integrity of the data.
I've formatted my hard drive, can the data be retrieved?
The basic thing we ask after receiving a question like that is: was formatting the hard drive the last thing you did with the hard drive ? 95% of the answers we get is "Yes, after the format I've installed the operating system and some basic applications". The question is crucial, because immediately after the usual format or partition removal, the chance for data recovery is high and in most cases, the data returns to the customer virtually intact.
However, if another data has been written on a formatted drive, things get difficult.
First of all - the process itself overwrites previous data. Furthermore, this also removes most copies of the address tables. As a result the whole procedure is less efficient, retrieving a coherent and clear catalogue structure is rare - most of the time what will be recovered are scattered parts of files. After reinstallation on the hard drive, the easiest method of file recovery is search by file extension.
Usually the recovery rate of "sentimental" files, such as photos, movies and documents is satisfactory. The case is different with hard drives containing databases (e.g. financial, accountant software) - the specific character of these applications as well as the significant amount of files required to run them might cause the recovery rate to drop as often even partially damaged files are needed to run the whole application. Nevertheless, it is always worth to try.
What is the physical procedure?
A physical procedure means any action we take on a technically malfunctioning or disabled carrier. The carrier can be either a hard drive, a memory card or a pendrive.
What is characteristic about this procedure is that it always requires interference into the physical integrity of the drive - e.g. opening the hard drive, disc head replacement, opening the memory card or pendrive.
What needs to be addressed here is that while these actions are done in order to save the data, it may also result in violating the warranty agreement on the carrier, or the device the carrier is a part of.
I can see burn marks on the electronic circuit board on the hard drive. Can I replace this board with another from an identical, working drive?
In the situation described above, the solution to the problem might not me as obvious as it first seems. A question needs to be asked: what caused the circuit to burn ? Would replacing the electronics solve the problem or cause the same damage and potentially destroy the data on the drive ?
In order to answer these question, at least several electrical measurements must be made. And that requires sophisticated equipment. Besides, we need to be sure the other drive we can salvage the electronics from is exactly the same. Both must contain the same subassembly relation between the external electronic circuits and the information crucial to proper functioning of the drive (disc calibration data, error list etc.)
Best case scenario in case of using the wrong electronic circuit board is that the drive will simply not work. However, it can also permanently and irreversibly damage the content of the drive vital to its proper functioning and thus preventing access to the data it contains.

While text processing, the Word file got deleted. Is there a way to recover it?
This is a very common question. Detailed instructions as to how to do that have been made available by Microsoft on the following page: http://support.microsoft.com/kb/827099/eng.
We entourage You to carefully read and follow the instructions provided.
D partition has been removed. There is no restore point in windows for this. Can the lost partition be saved?
In order to know whether the deleted partition can be recovered, the drive must be analyzed. The question doesn't suggest any action has been taken so far, so this looks promising. Now regarding restore points. This function, implemented in newer windows operating systems does not restore data and was never intended to do so. It just helps to bring the operating system to the state it was in at the moment of creation of the restore point.
For example:
7 days ago a new software has been installed. It causes (for example) instability of the system and attempts at uninstalling it were ineffective, restoring the system from the last restore point should resolve the problem. It will however also remove all programs installed and changes to the system made since the last restore point.
All data stored on the computer during this time should remain where they were, without any modifications.
What's the difference between data recovery from pendrives and digital camera memory cards?
The difference is there only when we're dealing with physical damage. Estimated price when it comes to digital cameras uses the assumption that these carriers serve only for storage of digital photos. With the above assumption, we've decided that if after a successful reconstruction an insignificant part of the content still contains errors, some of them can be fixed with proper framing. The situation gets complicated when dealing with a pendrive, as it is typically used to store data. Here the reconstruction must be very precise as we're aiming at achieving a proper catalogue-file structure in the end. This takes significantly more work and time, thus relating to the increased cost.