Q: how to prevent bad sector on HDD??

[OtakuKenz]

I shutdown lang ayaw i diretsu ug unplug. Nya ayaw lihok lihoka ang System Unit nimo pag naka on, much better kung ang location sa system unit kay kana dili matarug or ma uyog. If laptop na i minimize ang pag lihok sa laptop while naka on, much better if naka patong rana sa desk if mag gamit ka.
Nya ayaw sige ug reformat kay dali kaayo maguba imo HDD ana.
Make sure sad diay na naay intake fan sa front para dili kaayo ma init ang HDD.

[firelex18]

I shutdown lang ayaw i diretsu ug unplug. Nya ayaw lihok lihoka ang System Unit nimo pag naka on, much better kung ang location sa system unit kay kana dili matarug or ma uyog. If laptop na i minimize ang pag lihok sa laptop while naka on, much better if naka patong rana sa desk if mag gamit ka.
Nya ayaw sige ug reformat kay dali kaayo maguba imo HDD ana.
Make sure sad diay na naay intake fan sa front para dili kaayo ma init ang HDD.

salamat sir, usahay man gud matandog ang table.. salamat! =)

[erwin_rommel]

ayaw og gamit og generic nga powersupply

[gamemailxxx]

ayaw og gamit og generic nga powersupply

agree kaayo ko ani kay tagam ko saona ako mga 1TB cge kaguba mao karon gamit napud ko ug mga true rated nga PSU like silverstone and also butangi ug hdd cooler para dili mo init ang HD.

[infoseeker]

ug ang oulet where naka-saksak ang pc - maau unta siya ra gasaksak didto
+1 ko sa branded psu

[waffles]

maka apekto sad pud diay ang generic PSU? Mao siguro murag daghan na kayog bad sector akong pc.

[POPiO]

maka apekto sad pud diay ang generic PSU? Mao siguro murag daghan na kayog bad sector akong pc.

it could be.. ^_^

[giuboy]

sometimes multiple programs,uninstalling installing vice versa can lead to bad sectors.

[POPiO]

@firelex18

A bad sector on a hard drive is simply a tiny cluster of storage space — a sector — of the hard drive that appears to be defective. The sector won’t respond to read or write requests.

Bad sectors can occur on both traditional magnetic hard drives and modern solid-state drives. There are two types of bad sectors — one resulting from physical damage that can’t be repaired, and one resulting from software errors that can be fixed.

Types of Bad Sectors

There are two types of bad sectors — often divided into “physical” and “logical” bad sectors or “hard” and “soft” bad sectors.

A physical — or hard — bad sector is a cluster of storage on the hard drive that’s physically damaged. The hard drive’s head may have touched that part of the hard drive and damaged it, some dust may have settled on that sector and ruined it, a solid-state drive’s flash memory cell may have worn out, or the hard drive may have had other defects or wear issues that caused the sector to become physically damaged. This type of sector cannot be repaired.

A logical — or soft — bad sector is a cluster of storage on the hard drive that appears to not be working properly. The operating system may have tried to read data on the hard drive from this sector and found that the error-correcting code (ECC) didn’t match the contents of the sector, which suggests that something is wrong. These may be marked as bad sectors, but can be repaired by overwriting the drive with zeros — or, in the old days, performing a low-level format. Windows’ Disk Check tool can also repair such bad sectors.

Causes of Hard Bad Sectors

Your hard drive may have shipped from the factory with bad sectors. Modern manufacturing techniques aren’t perfect, and there’s a margin or error in everything. That’s why solid-state drives often ship with some defective blocks. These are marked as defective and are remapped to some of the solid-state drive’s extra memory cells.

On a solid-state drive, natural wear will eventually result in sectors becoming bad as they’re written to many times, and they’ll be remapped to the solid-state drive’s extra — or “overprovisioned” — memory. When the solid-state drive’s extra memory runs out, the drive’s capacity will start to drop as sectors become unreadable.

On a traditional magnetic hard drive, bad sectors can be caused by physical damage. The hard drive may have had a manufacturing error, natural wear may have worn part of the hard drive down, the drive may have been dropped, causing the hard drive’s head to touch the platter and damage some of the sectors, some air may have entered the sealed area of the hard drive and the dust may have damaged the drive — there are many possible causes.

Causes of Soft Bad Sectors

Soft bad sectors are caused by software issues. For example, if your computer suddenly shuts off due to a power outage or a pulled power cable, it’s possible that the hard drive may have shut off in the middle of writing to a sector. In some cases, it’s possible for sectors on the hard drive to contain data that doesn’t match their error-correction code — this would be marked as a bad sector. Viruses and other malware that messes with your computer could also cause such system issues and cause soft bad sectors to develop.

Data Loss and Hard Drive Failure

The reality of bad sectors brings home a chilling fact — even if your hard drive is otherwise working properly, it’s possible for a bad sector to develop and corrupt some of your data. This is another reason why you should always back up your data — multiple copies are the only thing that will prevent bad sectors and other issues from ruining your hard drive’s data.

When your computer notices a bad sector, it marks that sector as bad and ignores it in the future. The sector will be reallocated, so reads and writes to that sector will go elsewhere. This will show up as “Reallocated Sectors” in hard drive S.M.A.R.T. analysis tools like CrystalDiskInfo. If you had important data in that sector, however, it may be lost — possibly corrupting one or more files.

A few bad sectors don’t indicate that a hard drive is about to fail — they can just happen. However, if your hard drive is rapidly developing bad sectors, it may be a sign that your hard drive is failing.





Improper Shutdown



When a computer is suddenly shut down in the middle of writing data to the hard drive, the data in the sector can be corrupted. Improper shutdown can be caused by unplugging the computer from the wall while it is running, holding down the power button to force a shutdown, or by the computer freezing or locking up. Generally, the corrupted data can be repaired by the disk's own data repair software. Occasionally, though, the data can be garbled enough that the sector can only be recovered by formatting the disk, especially if the corruption affects the address system the computer uses to locate specific sectors.


Malware



Some viruses or other malware intentionally corrupt or destroy data, either as their primary function or as a byproduct of another function. Although most modern operating systems have basic protections in place to prevent viruses from corrupting data, it is still very possible to have a hard drive corrupted beyond repair by a virus. Most malware corrupts data by overwriting it with random garbage until it is beyond recovery.





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Physical Shock



Any time a hard drive suffers a physical shock while it is spinning, it runs the risk of contacting the platter with the read/write arm. This is very bad for both components, and can lead to sectors being physically damaged. This is different from software corruption, which can often be repaired by reformatting or scanning the disk. A physically damaged sector is usually gone for good. Damage can occur when computers are dropped or jarred.


Magnetic Weakening



To write data to a disk platter and retrieve it again later, the hard drive uses magnets to manipulate tiny flecks of magnetic material on the platter's surface. Over time, the magnetic components can wear out, destroying the precision and reliability of the read/write arms. When this happens, corruption begins to take place one byte at a time in a condition known as "bit rot." This will eventually lead to the total failure of the hard drive, but most of the data on the disk can usually be recovered if the problem is identified early enough.



---- COPY PASTE ra ni.. ^_^

[demzrheo888]

guys if naa na bad sectors atong hard drive magkadugay magkahinay og mudghan pman daw na dba? unsa man sad ang solution ane?