The computer starts up with a "click-click-click" sound, files that are opened so slowly that one wonders whether they have ever existed, or simply cannot find the hard drive. This experience is familiar to many friends who use mechanical hard drives.
Once a veteran in data storage, mechanical hard drives, even though solid-state drives have become popular, still have an irreplaceable position in terms of data security and large-capacity storage.
Precisely because of its critical nature, if it malfunctions, the first reaction of many people is panic. Where exactly did the error occur?
Can it still be repaired?
Can the data inside be saved?
In fact, mechanical hard drive failures can generally be divided into two categories: physical damage and logical damage. Only by understanding where the problem lies can we prescribe the right medicine to prevent unnecessary spending of money or missing the best rescue opportunity.
Physical damage: "faulty damage" to the hard disk is mostly irreversible
Physical damage refers to problems with the mechanical and electronic components inside the hard drive.
The most common situations are vibrations and drops. When a mechanical hard disk is working, the disk will rotate at high speed, and the magnetic head will fly a few microns above the disk surface. Even a very slight bump may cause the magnetic head to hit the disk, causing the disk to be scratched. This situation is basically "physical scrap".
A sudden power outage is also extremely fatal, especially when a power outage occurs when the magnetic head is performing read and write operations, and the magnetic head has no time to return to its position. This can easily scratch the disk, or directly cause damage to the magnetic head assembly.
Many friends think that just unplugging the mobile hard drive is enough. In fact, if you unplug it directly while the system is still reading and writing, the possibility of risks is quite high.
In addition, running under high temperature for a long time will cause the disk motor and bearings to accelerate the aging process, which will lead to an increasing number of bad sectors, and eventually the hard disk will not be recognized at all.
The normal service life of a mechanical hard drive is about 5 to 10 years under light load conditions. If used under high load, various signs of failure may appear in 3 to 5 years.
Logical damage: "false fault" at the software level, with great hope of repair
Compared with physical damage, logical damage is much friendlier. It generally does not involve hardware damage, but refers to errors and problems in the data organization structure in the hard disk.
For example, if there is an abnormal shutdown or the forced removal of the mobile hard disk, it is very likely that the file system will be damaged, causing problems with the partition table or disordered boot records, and the computer will not be able to find the hard disk, or will be prompted to format it.
Wrong operations are very common. For example, when reinstalling the system, there is an error in selecting the partition. Once you click "Format", all the data disappears without punctuation marks in an instant.
There are ransomware viruses and malware that will encrypt files or destroy the partition table, making it impossible to read the data.
Typical characteristics of logical damage are as follows: the hard disk itself does not make abnormal noises, and can rotate normally after the power is turned on. It can be seen in the disk management, but the system gives a prompt indicating that it has not been initialized or needs to be formatted.
By using professional data recovery software or using repair tools to deal with this type of problem, there is a high probability that the data can be recovered.
Improper usage habits: "chronic diseases" that slowly accumulate
Some damage is not caused by an accident, but slowly accumulates over a long period of improper use.
Many people use mechanical hard disks as download disks. When performing frequent BT download operations, a large number of small files will be read and written randomly, and the magnetic heads will have to constantly seek back and forth. If this continues for a long time, the probability of bad sectors will be greatly increased.
There is another situation that causes the hard disk to operate at full capacity for a long time. For example, it is like performing uninterrupted data reading and writing operations in a network-attached storage device around the clock, or it is used as a monitoring disk for continuous writing. As a result, the temperature of the hard disk is always at a high state. This situation will accelerate the aging of the motor and the thermal expansion of the disk, thereby shortening its service life.
It often happens that the mobile hard disk is used improperly. After each use, it is unplugged directly without going through the system pop-up step. If this is done for a long time, it is very easy to cause the file system to be damaged, and even physical bad sectors may occur.
Failure signs and response strategies: early detection and early treatment
Before a mechanical hard drive has a problem, it will actually send out a lot of "distress signals."
The most direct manifestation is abnormal noise. Normally, the sound produced by a normal hard disk is very slight. If you hear the sound of "clicking" or "sizzling" metals rubbing against each other, there is a high probability that there is a physical failure in the magnetic head or motor.
Not only that, the reading and writing speed suddenly becomes extremely slow, it takes a long time to open a folder, or the computer frequently shows blue screens and freezes, and the BIOS sometimes fails to recognize the hard drive when booting. These are all dangerous signs.
Once these situations are discovered, the first thing to do is to immediately stop any reading and writing activities on the hard disk, and do not try to power on again, otherwise it may cause physical damage to worsen.
If the data is extremely critical, you should find a professional data recovery agency as soon as possible; if it is just a logical problem, you can try to use a disk detection tool, such as CrystalDiskInfo, to check the health status first, and then use data recovery software to try to recover.
Daily use and maintenance: Give the hard drive a "comfortable" environment
Rather than waiting until the hard drive breaks down and then worrying, it is better to develop good habits every day.
For desktop computers, the hard drive should be placed as firmly as possible on a solid hard drive bay to reduce vibrations caused by the chassis; for laptop computers, bumps should be avoided when moving the computer, and it is best to shut down the computer before moving it.
Power supply quality is very critical. The voltage output by a poor-quality power supply is unstable. This instability can easily cause the hard disk circuit board to be burned.
After using the mobile hard disk, be sure to eject it through the "Safely Remove Hardware" button in the lower right corner of the system, and then unplug the connection cable. This step may seem cumbersome on the surface, but it can avoid most logical damage situations.
Regularly use the detection software in the hard disk to check the SMART information, and pay special attention to the two values of "Reallocated Sector Count" and "Current Sector Count to be Mapped". Once an early warning occurs, you must start preparing to back up data.
If these routine maintenance are done well, it is possible for a mechanical hard drive to be used for seven to eight years, or even longer.
It is not a terrible thing if the mechanical hard drive is damaged. The key is to be able to distinguish whether it is a physical problem or a logical problem.
In the case of data recovery, physical damage can often only be restored with the help of professional equipment. The repair cost is high and success is not guaranteed. However, logical damage can be repaired by software.
In daily life, you need to pay more attention to your usage habits and check the health of the hard drive at certain intervals. Only in this way can this older hard drive serve you longer and protect those vital data.
