I have a WD hard disk (1 TB additional drive to my PC). For the last 10 days, surprisingly its accessing speed plunged. I thought something wrong with my PC first. Later on, I realized that I may be victim of bad sectors.
I used "Advanced system manager" to scan the disk which confirmed bad sectors on my disk. But it stuck on J: after 58%. I tried 2 times. It fixed bad sectors of H:, and I: was free from bad sectors. [I left the PC for processing at least for 16 -18 hours]
Next time I tried "HDD Regenerator" who found 22 bad sectors. But it failed to repair same in windows mode. And since its bootable USB was not working, so I failed reparing at the time of system startup.
This time I tried programs from "Hiren Boot CD". One of the tool stuck after 58% done. I tried "WD diagnostic tool" who found errors on my drive and returned 007 response code. It recovery tool failed with response code 225 (as I remembered). So this time I again tried "HDD regenerator". Till 58% It was running fine and found around 34 bad sectors. He regenerated them too. But now onwards it is regularly finding bad sectors and regenerating sectors which is making me afraid.
Most of the time, programs that claim to fix bad sectors do not fix them. What they do is find out where the bad sectors are and put police ropes all around them to prevent your system from writing data to those blocks. Does is work all of the time?, no.
One thing i've done in the past with a bad disk (more motor related) with is plugged it in outside of the computer. I had a pan of some water and ice sitting on the drive (after having it in the freezer for a bit). I kept the drive extremely cold and was able to copy over data.
The HDD replaces bad sectors with these, but only when the bad sector is written to!
Also, the HDD itself decides on what sector is "bad", unreadable correctly.
That is, sectors have checksums so HDD firmware can detect "bad" sectors.(or more complex error checking mechanisms).
Additional detection obviously by other means inside the HDD.
spare-sectors are limited, "how many" and "where" are well kept secret by manufacturer, but assumption is that they exist on the same track (circle, or cylinder). That is, no extra seek needed for read head, just a delay until the spare is under the read head.
"Long time Ago" one could read these lists, usually with "negative sector numbers" and/or writing some unlocking code to HDD controller.However, as this would give ordinary users information on HDD quality, the info was made more secret.(it also makes it possible for manufacturer to sort the HDDs in different quality classes, some for CIA, some for Google and the rest for you)
HDDreg, HDD Regenerator clearly activates this spare-by-writing but clearly also does some other tricks to "save the data".Claims it "regenerates" by detecting,using, humping some "magnetic hysteresis" of the surface. Might be true, maybe not, but sounds like selling stuff.BEST TOOL ON MARKET!!
However, some new HDDs "crash their own firmware" when a too defective surface. HDD disappears from OS, might lock the SATA,etc controller, etc deadly stuff (for rest of computer).Luckily power-off-on of just the HDD gets the controller-firmware running again (no need to reboot, but only if you're using hot-swappable SATA)
Scanning a HDD continuously/is what some anti-virus programs and even operating systems already do.Additionally also "outside partitions" which is snart as that is one good place for viruses. (as are unused sectors inside partition, MFT tables,etc,etc)
Typically this starts after Computer has been idle for a while, for example middle of night,If either anti-virus or OS-syst then run into bad sectors, weird things can again happen.The reason for this is that the chain HDD-COntroller-OS typically cant speak properly with each other, decode the error codes produced by HDD firmware, controller,low level drivers and finally stoopid Windows GUI.
This article is telling how to repair bad sectors when your hdd, external hard disk, usb drive etc has bad blocks. You may regenerator your disk as new one if you start to repair bad sectors.
This program is a must have when it comes to the current digital storage period. To keep hard disk, external drive working with better performance, it is nice to keep your disk always cleaned and repaired. If your hard disk runs with weird sound or it does not work properly, it is high time that you repair your bad sectors on your hard drive.
Now we have proceeded to the longest stage, the scanning process. As you can see, HDD Regenerator lets you monitor what sectors have been scanned, diagnosed, and recovered while your drive is being scanned.
As you can see, HDD Regenerator is a powerful tool for anyone looking for a solution to fix bad sectors. Whether you would like to repair your primary Hard Disk Drive, external Hard Disk Drive, or a USB flash drive, HDD Regenerator is the perfect tool to get the job done, while maintaining a safe atmosphere for your data.
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