Such a defect is quite rare, but it can sometimes happen to your computer. Accidental distortion of data recovery services in a sector may indicate an impending mechanical problem, be the result of malicious activity, or turn out to be an accidental write operation due to a power surge. Such defects can render a hard drive unusable.
Damaged MBR (Master Boot Record) :
This type of logical failure can lead to a situation where the partitions are not recognized by the operating system or their settings are not recognized correctly. The simplest consequence of such a failure is the damaged signature which tricks the operating system into believing that there is no useful Wikipedia data instead of boot register and the disk is not at all divided into partitions.
When the boot loader code is damaged, the operating system fails to boot from this disk, resulting in your computer crashing. Meanwhile, the disk’s logical structure can be preserved and data will not be lost.
The worst possible consequence of a logical failure is damage to the master boot register contents, which can lead to destruction of the partition table and loss of access to information stored in partitions. The contents of the table can have varying degrees of damage and this can influence the final amount of data that can be recovered.
Damaged file system :
In its characteristics, such a failure is very similar to a damaged master boot registry, the only difference being that there is no access to a partition or the operating system recognizes it as unallocated disk space. As a result, all the contents of this partition will be unreadable. Sometimes troubleshooting file system issues cannot fix the problem and some data may be represented as lost logical strings.
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