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When a disk starts to fail it is very important not to destroy it during the recovery process.This may seem obvious, but the most common is that the user, realizing that the disk is not working correctly, turns it on and off several times, hits it or scans it with the first program that Google suggests.
If that is not successful, he will most likely take you to tech support (or his “computer savvy” cousin).
Again, the same: Turn it on and off, put it in a USB converter, tap, run programs, etc.
Unfortunately, these “well-intentioned” attempts can further harm you, hopelessly destroying the information.
What to do when a Disc Fails
The first thing to do is determine the fault. Virtually all logical and / or physical problems are progressive, so we must be very careful not to lose information.
If the disk is still detected at its make and capacity, its Smart status can be investigated.
Smart technology allows us to know the “health” state of the disk, so that we can decide between trying to recover it ourselves or whether it is better to send it for diagnosis with professional https://www.salvagedata.com/.
The second thing is to not allow any action that could overwrite data on the damaged disk. That is why we should not continue using it, and neither should we install programs on it.
This is important because we must not write anything (voluntarily or involuntarily), which could take the place of our previous data.
What to do if the Smart Status is Good
Even if the condition of the disk is reported as “good”, it is clear that we have come this far on the trail of a problem.
The correct procedure is to connect the disk to another computer, through special equipment that prevents writing to the damaged disk.
It is not enough with just any USB or SATA adapter, because Windows automatically “mounts” the detected partitions and uses them as part of its swap files, writing in masse to all of them.
Assuming the disk has been writing protected, an “image” or “clone” (sector-by-sector copy of the damaged disk) should be made in a different location. This process is risky because it involves reading all the sectors of the drive.
If the problem is due to bad sectors, the special recovery team can adapt to the necessary variables of the particular case, to modify the number of read retries, the size of the sector read or skipped, etc.
The number of bad sectors is also monitored. In case this number grows with use, other procedures for data recovery should be tried, even if they are more specialized, expensive or invasive (such as changing the head or changing plates in the laboratory).
What to do if the Disk is Detected but the Smart Status is not Good
This indicates serious damage, which requires professional attention.
Sometimes, the special equipment allows us to read data even if there is slight damage, and we can also modify variables such as “hard” or “soft” reboots, do recalibrations on the fly or disable advanced functions such as “look ahead” or “auto reallocation” , to reduce the stress to which the damaged disc is subjected.
What to do if the Disc is not Correctly Detected
If the disk is detected with a different model, or with a different size (for example, it is 4Tb and 3Gb are detected), this indicates a corruption in the firmware and / or the system area of the unit, which generally comes from a defective head.
Special equipment allows us to connect to disks in “factory mode” to diagnose the problem and sometimes repair modules or use system area backups to temporarily repair the disk and recover information.
This connection is physical and is not achieved only by a program, in addition to the commands to make emergency repairs are practically secret and change between each manufacturer and model.
What to do if the Disc is not Detected
If the disk is not detected, it may be due to an electrical malfunction of the card, among other things.
If you connect a shorted disk directly to another computer, or through an adapter, you run the risk of electric shock, burning the equipment in question, or damaging or destroying the disk with its data.
In the diagnosis we use special recovery equipment that is protected against short circuits, and that also tells us if there is any burned component on the controller card.
What to do if the Disc Makes any Sound or Turns on and off
These symptoms indicate serious internal damage, almost always electronic or mechanical, that requires professional attention.
If there is internal damage, the disc must be opened in a controlled environment to avoid contamination and to carry out emergency repairs, change of parts or change the plates to another unit for reading.
If the disc was hit or dropped, or if it makes a sound different from normal use, it may have internal damage, which is always physical, progressive and destructive to the information.
In that case, you should not reconnect the disk and you should go to data recovery specialists for a professional diagnosis.
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