A sector is damaged, if content cant be normally read out from or written into it.
The magnetic track, that this bad sector lies in, is called bad track.
Of course, this bad track appears because of software errors or hardware failure of hard disk itself.
Therefore, bad track includes physical bad track and logical bad track.
But, this doesnt mean that a hard disk with bad track cant be used.
Actually, data on this hard disk can be recovered if users disposal method is correct.
This makes hard disk cant read and write.
Users cant repair the hard disk, so they have to abandon it.
Physical bad track varies according to the area where it appears.
So, the bad track isnt in any logical drive and is never be accessed.
Some disk space is lost, but the equipment can be normally used.
And start will be terminated.
This kind of bad track is called logical bad track or soft bad track.
The Surface Test feature ofMiniTool Partition Wizardcan be used to scan the disk and mark the bad sector.
How to operate this Surface Test feature?
Pease click to visit this post:Disk Surface Test.
(2) The sound of hard disk suddenly turns into strange sound from the original normal friction sound.
(3) System cant start normally excluding the reason of virus infection.
The prompt message of Sector not found or General error in reading drive C appears.
(4) When hard disk is formatted, operations interrupt at a certain schedule.
And finally computer prompts error suggesting that operations cant be finished.
(5) Scandisk will be automatically run to scan disk error each time when computer is started.
(7) System cant be booted by hard disk when you start computer.
you might go todrive letterafter starting system with floppy disk, but the drive cant be entered.
Even if you conduct system by using SYS command, the drive still cant be entered.
This situation appears mostly because there is a problem with theboot sectorof disks.
4.Overview of Misunderstanding
(1) Logical bad track can be repaired while physical bad track cant.
(2) There is no bad track on hard disk when it leaves factory.
If users find bad track, this means that hard disk may become useless soon.
In fact, every disk records a certain number of bad tracks before it leaves factory.
And some disks even records up to tens of thousands of bad tracks.
(3) The hard disk cant be repaired, if it cant be found.
you’re able to use partitioning methods to solve the damage problem of track 0.
The reality is that a considerable part of disks, which cant be found, can also be repaired.
But, its difficult to partition when track 0 is damaged.
You cantrepair hard diskby opening it, but you may fix it with some software.
In the case of logical bad track, the recovery effect is still not ideal for some cases.
You should turn to professional data recovery personnel to test to make it find out where the problem is.
It only performs reading operation rather than writing operation on hard disk.
This can avoid secondary damage to data on hard disk.
