Bad sector is the place where you cant write data.
Almost all hard disks havebad sectors.
you’re free to mark them out or repair them by re-formatting.
You must remember that if you format hard drive, the data will be completely lost.
If there are, you might then search a way on the internet to repair these bad sectors.
Physical Damage
Physical damage cant be repaired.
Data will never be able to be written to this sector.
If there is such a bad sector on hard disk, this hard disk is almost useless.
Hard disk is divided into memory cell in units of sectors for storing data.
Each hard disk has tens of thousands of sectors.
to get to avoid losses brought by bad sectors, you should test computer every six months.
At the same time, you should avoid hitting or bumping hard disk.
If there are some continuous bad sectors, this means that hard disk is badly worn.
This may be the time to replace the hard drive.
Therefore, the best way to deal with bad sectors is to mark them out.
you might achieve this byrunning scandisk.
Such kinds of tools include the features of Zero fill or Low level format.
When these two features are used, the data on the disk are cleared.
And when you use these features, the checksum and identifying information of every sector will be rewritten.
This is what called logical bad sectors can be repaired.
(2) Auto-repair mechanism is called to replace bad sectors.
Internal management program also records physical location and replacing details in G-list (Grown defects list).
As a result, a small number of bad sectors are automatically replaced during usage process.
They dont affect much on users normally use.
There is also some hard disk auto-repair mechanism whose excitation conditions are strict.
They also issue appropriate instructions to stimulate auto-repair function.
Of course, G-list records are limited.
G-list of all hard disk will be limited to a certain number range.
The auto-repair mechanism cant repair the bad sectors if records are over the limit number.
Hard disk can be accessed according to logical address mode rather than physical address mode when users use it.
These parameters are used as transition basis between physical address and logical address.
Then, the software will call the internal low-level formatting program for low-level formatting.
This can avoid the limit of G-list and repair lots of bad sectors.
4.Repairing Methods
If damage of hard disk belongs to logical corruption, we can re-plant the software.
What if it belongs to physical corruption?
Specific Solutions
For the previous three circumstances, we generally have ways to make remedy.
Here are several ways of repairing hard disk bad sectors.
You should know that priority should be given to top ranking methods.
(1 ) Firstly, we should start with the easiest way.
If Win 98 cant be entered, you’re free to use its boot disk to start.
cold treatment means that we can mark the bad sectors and dont use them.
Later, we shouldnt save files on this area.
(3) you’re free to manage hard disk with some software.Partition Magicis the most typical one.
Here we just take version 5.0 as an example.
After bad cluster is marked, we can try re-testing it.
The method is to choose Advanced/bad Sector Retest in the Operations menu.
This can be achieved by using Hide Partition item.
For example, the desktop shortcuts of some software cant find the host program.
The solution is to use Drive Mapper item in Tools.
This item will automatically collects shortcut and registry information and then make right modification.
In addition, Disk Manager can also do this job.
The ideal software to finish this work is the DE tool of PCtools 9.0.
(5) We had better not use this method if there are other ways to choose.
This way is to carry out low-level format operation on hard disk.
The content above is the solution to hard disk physical damage.
But, most of these methods are remedies at the expense of hard disk capacity.
Therefore, we had better do prudent operations on hard disk at ordinary times.
