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Thursday, November 24, 2011

How to do Data Recovery

You may need to recover data in 2 different cases - when there is a hard disk drive (HDD) failure or files have been deleted accidentally. If there is a mechanical failure in the hard disk, recovering data may not be possible, unless the mechanical problem is fixed.

How to fix it:
1.  Connect the problematic hard drive to a working computer as a secondary drive (slave). Start the computer and check if  the drive is recognized during the POST. If it does not show up, there could be a mechanical problem in the hard drive, which has to be fixed first.

2. Download PC Inspector File Recovery software on the master drive, and run the software. While it usually fixes most problems,  it may not work in a few cases.
Another free utility for recovering data from damaged FAT, FAT32 and NTFS partitions is the bootable Knoppix Linux distribution CD.
There are other hard drive recovery software for download from the internet.

 If  you realize that  you have accidentally deleted data from your computer.
1.  Check the Recycle Bin. Unless you have emptied your recycle bin , the deleted file will be present and restoring it is simple. You can choose to undelete a single file or multiple files at a time. Hard drive recovery software are not needed to do the data recovery.

2.  If the recycle bin has been emptied and you have not written any more data on the hard disk drive, you can recover the file using hard drive recovery solutions like data recovery softwares. 
When you delete a file, the file remains on the hard disk, only the record on the MFT  (Master FAT Table) marks the file storage location as free. This "free" space is overwritten the next time a file is written onto the hard disk.
Similarly if a partition is accidentally deleted, do not create a new partition.
 Copying a large file takes a long time since data is written on the hard disk, while deleting a file takes a much shorter time, since only the MFT is modified.  Also do not defragment the hard disk, since data recovery will be difficult.

3.Read Tutorial to recover data from a NTFS partition or Tutorial to recover data from a FAT partition ; you will need a hex editor, data recovery software or other hard drive recovery solutions.


  1. Data recovery is the process of salvaging data from damaged, failed, corrupted, or inaccessible secondary storage media when it cannot be accessed normally.
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  2. Really Good Blog of hard disk data recovery. It good to see an honest account and you talking real sense too. Great!

  3. Even though it's easy for us technicians, this is good data for the regular user.
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  4. Hello,

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  5. Interesting and beautiful blog lovely presentation thanks for sharing your views..

  6. Whenever we delete files from the recycle bin,it is not permanently deleted from the hard drive,it can be recovered from the any of the free data recovery software.

  7. Excellent post, keep sharing more and more. Very helpful guidelines and instructions that how to data recovery.

  8. I appreciate you for helpful guidelines. Data recovery process is really hard to do especially for me. Because I've tried it many times. I always get help from online computer repair services.

  9. very usable literature for "How to fix it"? Thanks buddy.