Stellar Knowledge Base

Recover Data from a Drive Failing due to Bad Sectors on Mac

 Modified on: November 26, 2018 |    15050 views

A hard drive or SSD of any make or brand is divided into millions of sectors. These sectors (or blocks) on the drives are nothing but small spaces which stores our data. Bad sectors may arouse due to any physical damage received, e.g. the head of the drive making contact with the hard disk drive Platter causing shocks and vibrations. Once the drive develops some bad sectors, they (bad sectors) cannot be accessed due to damage received on the surface of the disk drive. A bad sector of a hard drive is of no use for storing any piece of data or information on it.

Why are bad sectors a nightmare?

  • Bad sectors affect the important data stored on the drive, can also corrupt macOS files.
  • If the system continuously reads these bad sectors, the risk of system crash increases
  • Bad sectors may decrease the life of the hard drive and ultimately make it become dead

How to Recover Data from a Drive that contains Bad Sectors?

If the MacOS hard drive or SSD contains some bad sectors then it is advisable to recover data as soon as possible because the percentage of recovering data from good sectors is much higher than those of partially bad sectors. By running Stellar Data Recovery Professional for Mac, a Mac user can easily recover data even though the drive contains bad sectors.

Watch the Software Tutorial Video & Rescue you Data from a Drive having Bad Sectors


2 User Comments

Hello, I would like to ask, this mac software, whether there is PE boot? In addition, due to some reasons, the system itself is damaged。






We would like to inform you that software provides an option to recover data from a completely crashed computer. When the computer (or in other words, it’s hard drive) crashes, the operating system fails to load and the computer does not boot up. For such incidents, Stellar Data Recovery has an option to create a Bootable Recovery Drive, which can be used to boot the computer with a USB drive and recover all your data.

You may submit ticket to our experts using below link for further assistance:


Stellar Data Recovery


User Comments




Stellar Data Recovery Professional for Mac Stellar Data Recovery Professional for Mac software is a DIY tool to recover critical documents, emails, photos and videos from any storage media based on macOS Monterey, Big Sur, Catalina, Mojave, High Sierra, and older versions.

Learn More red arrow


Related Articles



Why Choose Stellar?

  • 0M+


  • 0+

    Years of Excellence

  • 0+

    R&D Engineers

  • 0+


  • 0+


  • 0+

    Awards Received