Repair BAD Sectors or Buy a new HDD?

Internal Hard Disk Costs:
a. Internal HDD 500GB Costs: Rs3518
b.1 External HDD 500GB Costs: Rs3472
b.2 External HDD 1TB Costs: Rs5500
c. Internal to External Converter Costs: Rs650

I have a Seagate internal hard disk drive. I recently opened up my laptop [Dell Inspiron N5010] [Warranty has expired], cleaned it and it worked normally after waking up from hibernation. However, when I restarted it, it stuck on windows loading screen, then tried to boot from Dell recovery partition but failed. It gave the error:

Windows has encounter a problem communicating with a device connected to your computer.

This error can be caused by unplugging a removable storage device such as an external USB drive while the device is in use, or by faulty hardware such as a hard drive or CD-ROM drive that is failing. Make sure any removable storage is properly connected and then restart your computer

If you continue to receive this error message, contact the hardware manufacturer.

Status: 0xc00000e9
Info: An unexpected I/O error has occurred.

While cleaning, I had mistakenly touched the round silvery thing at the bottom of the HDD. I don't know whether this has caused the problem or not. Since I have Fedora also installed in the same HDD, I can boot from it but it shows weird read errors when I ask it to mount Windows partitions. The disk utility also says that the Hard Disk has many bad sectors and needs to be replaced.

I downloaded Seatools from Seagate website and used it. In the long test, I gave it permission to repair the first 100 errors which it did successfully. Now I am confused at what I should do.

I have the following options:
(i) Buy an External HDD, backup my data. Try to repair bad sectors of HDD. Then two cases arise:
(a) My Internal HDD gets repaired [almost]
(b) My internal HDD doesn't get repaired. Then I need to buy another internal HDD and replace the damaged one. OR break the seal of the external one and put it inside my laptop as internal. Breaking the case involves risks.
(ii) Buy a Internal HDD and an Internal to External Converter Case [Not very reliable], backup my data. Try to repair bad sectors of HDD. Then two cases arise:
(a) My Internal HDD gets repaired [almost]
(b) My internal HDD doesn't get repaired. Then I need to just put in the new internal HDD I just bought.

Experts, please guide me as to what will be the most VFM option? Also, if a HDD is failing, is it that I shouldn't read from it too otherwise there is a chance of other sectors failing? What I mean is, is it wrong to read from the HDD without taking backup first?
4 answers Last reply Best Answer
More about repair sectors
  1. Best answer
    Back up all data from that drive as soon as possible, as it could fail completely at any time.

    "Repairing" bad sectors is only a short-term solution (if it can be described as a solution at all) and many would say that such repairs are a myth in real terms.
    Once a drive starts to get more than a couple of bad sectors I resign it to the nearest skip and buy a new one.

    With 100 errors it's a no-brainer. Don't trust the somewhat dubious "repairs".
  2. I made chunks of 10GB unformatted partitions and used LLF on them one by one. For LLF I used: dd if=/dev/zero of=/dev/sdax bs=1M count=1048576 and for checking bad blocks, I used badblocks -v /dev/sdax > bad-blocks. This method told me that only the beginning 20GB of my HDD has bad sectors. Now I have left that beginning sectors as unformated or unallocated and used the remaining to install Windows and Fedora. Is this kinda usage favorable or will the HDD fail eventually?
  3. Best answer selected by nehaljwani.
  4. The OP was not so much concerned about rescuing data from the drive as he/she was about continuing to use the drive. As I advised, continuing to use a drive in that condition is not a sensible option.
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