Stellar Knowledge Base
Bad sectors in your hard disk lead to complete inaccessibility of the drives, causing data loss. If your hard disk has some bad sectors, the first thing you should do is to immediately backup your data by creating an image of the disk using the software. You can later use this image to restore all your lost or inaccessible data. The 'Imaging' feature of >Stellar Data Recovery Professional enables you to create an image of the entire hard disk drive or any selected region of the disk.The software processes all sectors on your hard disk to create the image file and is capable of recovering data from the image created, except the severely corrupt ones.
Watch out the video tutorial here:
What causes bad sectors on hard drive?
Hard drive storage elements or so called 'Platters' is divided into sectors and blocks. These sectors is used to locate the desired data by read/write head. After continuous hard disk usage, it started getting rough and looses its magnetic nature and thus, started failing. Besides that, there are various other reasons that leads to bad sectors on your hard disk drive and some of them are mentioned below:
Overheating causes internal hard drive equipments to fail soon. Doesn't matter if you've pretty new hard drive, overheating can damage it too.
Over-aging is bad for almost any electronic device and after certain span of time, electronic devices will continue to fail or even die. Being an electronic device, hard drive equipments will start failing and so as the hard disk platters.
File System Error is one of the most common causes of bad sectors on hard drive. It'll make your data permanently damaged and non recoverable.
Virus/Malware Attack is created to malfunction the operating ability of computer system. However, sometimes it does damage the platters of the hard drive and other CPU equipments and may cause it to fail permanently.
Identifying bad sectors on hard drive
Once the bad sectors on hard drive has been developed, it can't be removed or replaced. The best thing you can do is, replace the hard drive immediately after taking backup of all your important data and purchase a new hard drive.
However, it is important to first spot the bad sectors to get roughly idea about how much times still been left to keep using the drive. There are various hard drive monitoring and health status check utility available such as S.M.A.R.T. through which, you can easily identify the bad sectors and various other crucial details.
For the sake of simplicity, below are the common problems that anyone could face if the hard drive is failing or developed large number of bad sectors:
You can recover data from a hard drive that has bad sectors by using the Create Image option of Stellar Windows Data Recovery.
Note: Recovery of data from hard drive that has bad sectors is only possible up to an extent and full recovery of data is not possible.
Follow the steps mentioned below to recover data using Create Image option:
Images, of all sources are saved as IMG file. The IMG file is of same size as of the source. You can use the image files to resume recovery later.
The image you create by using Stellar Windows Data Recovery will be of same size as the selected hard disk, pen drive, or volume. Ensure that the location where image file needs to be saved has sufficient space to store the image file.
To create image file of hard disk, volume, or removable media:
To create image of selected region click on Advanced Settings. From 'Select Range to Create Image' screen drag the sliders to define starting and ending sectors of the image file. Click Close, and then click Start Imaging.
Now, to recover data using any disk image:
Stellar Data Recovery Professional Stellar Data Recovery Professional is a do-it-yourself data recovery software that helps you to easily recover deleted files & folders, missing or corrupt partitions and even accidentally formatted hard drives.