Hard Disk fail : better off than on
It often happens that a disk suffers a fall just as it is in operation even while you are writing or reading a file from it.
Unfortunately this is the worst possibility for a hard drive, since at that time the heads are definitely reading / writing from surface.
But the greatest damage is not even that , because during this phase it is possible that the heads, just impacting on areas, scratching considerably, to the point they can no longer make the attempt to recover the data.
The real problem is that , the user is prompted to connect the drive to the PC, however, to see if it is still working and very often, this is the stage where you generate the most damage.
This is because if after the fall, the heads are no longer axis, at restart of the disk, they may at this stage, damage the surfaces.
The advice would be to not restart the disc if you are going to recover data from hard drive after a fall.
Rotation lock after falling Hard Disk
We have seen how the damages that may experience a hard drive that suffers a fall or a collision are manifold.
Sometimes the damage can also affect the engine rotation. In fact you can find in the situation where, by connecting a drive after a fall, it even starts. In practice we do not feel even the sound of the rotation of the dishes.
But it can also cause damage that affects specifically the motor rotation. In this case you will need to replace the motor rotation (spindle motor).
In fact, in the presence of damage to the engine rotation, you will have to make an explantation of the dishes that will be transferred to a disk twin with the same specifications of the motor rotation of the disc "patient".
Since this is an operation to be performed in a clean room, only professional data recovery company can do this for groped data recovery from hard disk crashed.
Electrical damage or physical damage?
It may happen that a hard drive that is damaged due to a fall, when you try to restart it does not give any sign of life apparently.
This leads one to believe that the damage is due to a malfunction of the electronic board (PCB) and then the damage is not physical in nature.
In fact also in this case the damage is of a physical nature since some hard disks , especially the Western Digital, when they suffer a damage to the head assembly, adopt a precautionary measure.
We know that the very first stage after ignition of a hard drive, is the alignment of the head assembly.
If even just one of the heads is damaged, this operation (alignment in fact) do not will fail.
This operation takes place in a split second and that's why we feel the classic Click which is the sum of the movement of return from the dishes.
In modern disk drives, however, the sound is less audible, and especially the attempt of alignment is performed for 3/5 times.
Failed alignment, the heads are shown in the rest area and the disc stops rotating.
This is to protect the surface of the dishes, since a damage of the head assembly may correspond damage to the surfaces in contact.
As we said in the modern drives these operations are carried out quickly and quietly, so if you do not pay much attention, not even perceive them, and we are led to believe that the disc has not even started.
In short, when a disk is dropped, almost always have to do the clean room to recover a crashed disk, rather than assume that the damage is electrical in nature.
Hard drive crashed : replacing mechanical parts
When a hard disk is damaged due to a fall or a collision, the consequence is that very often damaged in both the head assembly and / or the motor rotation.
It goes without saying that the first operation consists in the replacement of the mechanical parts damaged action to restore the functionality of the disc.
The choice of the mechanical parts compatible is quite complex since they have to respect very precise parameters to have a good compatibility of the head assembly or motor, and these parameters vary not only for various Brand but also for families within the various brands.
This explains the much higher cost than traditional hard commercially.
Furthermore, consider the difficulty in finding the mechanical parts as usually has to do with disks now discontinued.
This explains why some at least that offer mechanical parts specifically for data recovery, offer these parts at prices somewhat higher.
Unfortunately there is an alternative way to groped data recovery from hard disk crashed.
Not always the recovery of a Hard Disk is Total !
When a hard disk is dropped, as already described the support is often affected by a physical damage to the head assembly.
These then can further damage the surfaces of storage, scraping species to restart the media.
This makes us understand how to ensure the recovery of 100% of the data stored on a medium that has been dropped is very optimistic as regard. In fact, the recovery rate decreases with the increase of the damages suffered by the surfaces.
This does not mean that absolutely never be possible to recover data from hard drives fell in a total, but that it does so only in the best conditions and with the predominant proportion.
Engine block after falling Hard Disk
One username scenarios that can occur after a hard drive falls or is hit, is to be in front of a holder that hangs literally.
A crash is the engine rotation because it is damaged physically or electrically.
Paradoxically, this eventuality, as severe enough to damage the head assembly, can assume a positive side as thanks to the blocking of rotation of the motor, the heads do not have the opportunity to damage the surfaces of storage.
Even in the case of block rotation, data recovery from hard disk crashed can be carried out by specialized companies as the support must be opened, analyzed, restored in clean room aseptic.
No other way can allow recovery of data stored on your support.
Diagnosis Room White on a Hard Disk fallen
Why is it necessary diagnosis in clean room when it falls a Hard Disk?
90% (and we are underestimating the percentage) of the time that a hard drive is dropped, GROUP HEAD CRASHED A PHYSICAL LEVEL.
As explained in other posts, the damage that occurs to the disk is often following the fall. This is because if during the impact the heads must be off-axis with respect to the arms, when the disc is restarted, the heads, touching surfaces, generate the grooves on the surfaces themselves.
It is therefore essential to check the status of the disc after the fall, so that's why the need of diagnosis in clean room.
That's why the only way to see if it is possible to recover data from a crashed hard drive is to perform the transplant group heads in white room.
The "noise" typical after the fall of a Hard Disk
When a hard drive is dropped (or impact) the most common damage that is encountered is physical.
We have already said that the party most damaged is the optical group (the group heads) to follow the rotation motor and the spacers that some discs are located between the plates.
In all these cases the user has no chance to restore the functionality of the disc , indeed groped with various recovery software may further compromise the situation up to make the media unrecoverable.
In that case, you should contact a data recovery company like ours that in case of data recovery from hard disk crashed can operate safely (you must perform recovery operations in clean room) and especially with the necessary knowledge and equipment to do it.
Typical causes of physical damage of a hard drive
The reasons for physical damage to the hard drive (especially after an impact or a fall) may be different and the most common are :
1 . Mechanical failure, you hear the sound "click" and can lead to loss of data.
2 . Liquids such as water, coffee that flood the media, can ruin your hard drive.
3 . Electrical fault , current spike , abnormality in the mains or in the PC.
4 . Failure in the provision of reading or writing heads.
5 . Read and Write locks the head assembly.
6 . Burned chip on the logic board (PCB) of the hard drive.
7 . Swing motor damaged / seized.
8 . The powder is placed between the plate and the heads.
All this damage can be "repaired" only with the appropriate equipment in a controlled environment (clean room) that only companies data recovery from physical damage on Hard Disk possess.
That's why we do not recommend groped with data recovery software.
Hard drive crashed : Warranty
As we got to write, when a hard drive falls almost certainly suffers physical damage.
One of the frequently asked questions that is made in these cases is whether we can make use of the manufacturer's warranty for data recovery.
It's good to clarify that the warranty on the hard disk does not provide the opportunity to regain possession of the stored data but, like any item purchased, made the most of the hard disk if defects are found in manufacturing.
If you need to recover data from a crashed hard disk, the disk must necessarily be opened with the consequent removal of seals which thus causes the forfeiture thereof.
But it is clear that if you do not need to recover the data, nor is it necessary to use the services of a data recovery.
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