Bed secter of hard disk

[roxgord]

my laptop hard disk is slow prosesing slow .my laptop configuration is "i 5 processor, 3 GB ram ,320 GB hard disk

 

[Hawkeye22]

If chkdsk /f doesn't fix it, there isn't much you can do. If the drive is under warranty, replace it.

 

[ex_bubblehead]

If you are actually seeing the bad sectors it means that the drive is failing. You should never see bad sectors on a modern hard drive. They leave the factory with a fixed size table of spare blocks to be used when the drive detects a block going bad. In normal operation the drive will relocate data from the bad block to one of the spares, mark the bad block out permanently, then remap the spare to the old address, all invisible to the user. When you start to see the bad blocks it means that the spare blocks table has been exhausted and that there are now hundreds, if not thousands of bad blocks on the drive. In short, the drive is failing. Back up your data immediately and replace the drive.

 

[Hawkeye22]

If you are actually seeing the bad sectors it means that the drive is failing. You should never see bad sectors on a modern hard drive. They leave the factory with a fixed size table of spare blocks to be used when the drive detects a block going bad. In normal operation the drive will relocate data from the bad block to one of the spares, mark the bad block out permanently, then remap the spare to the old address, all invisible to the user. When you start to see the bad blocks it means that the spare blocks table has been exhausted and that there are now hundreds, if not thousands of bad blocks on the drive. In short, the drive is failing. Back up your data immediately and replace the drive.

SMART will list these as reallocated sector count - not so much a problem as these are sectors that got remapped and pending sector count - not good as there are no more spare blocks.

@OP, check your smart status using a utility like HDTune or smartfan.