Check Mac Disk For Bad Sectors

Disk Genius is one of the most popular hard disk management tools among IT. The sectors are reallocated when the hard drive gets errors while writing, reading, or verifying data. The data is then moved to the spare sectors of the disk. This part of the hard drive operation prevents corruption and data loss. The Bad Sectors. A hard drive reallocated sector count or a drive with several bad sectors causes corruption. This method works on both internal and external storage (hard disk drive or flash drive). Furthermore, you can repair the startup disk by using the file system check function. In this article, we describe the methods available to check drive health status and attempt to repair bad sectors and other issues. Table of Contents: Introduction.

  1. Windows 10 Scan Disk For Bad Sectors
  2. Check Mac Disk For Bad Sectors Without

Bad sector is one of the biggest threats to hard disk and the data inside. Even new hard disks from trustworthy brands and sources could come with defects, let alone to say if your internal or external hard drive has served you over years. Don’t be surprised when you realize that your PC is running slow or with errors, like blue screen and random crash. They are just saying it is time to check and repair bad sectors on your hard disks.

Why You Need to Fix Hard Disk Bad Sectors

Bad sectors are usually caused due to the overloading of system files, or virus and spyware which creates troubles for the hard drive. This issue has evolved out to be a big nightmare for owners of computer or external hard drive.

The bad sectors of hard drive are responsible for the low-level performance and overheating issues for the PC because it is very hard to read the data from a corrupted hard drive with bad sectors in it. Some users have also reported that they are facing the issue of Blue Screen of Death (BSoD) error in their PC. This is really annoying and irritating for the users because they can even lose their whole data if those bad sectors present in the hard drive is not removed.

If your hard drive bears any physical damage, then for a complete solution of this issue, you need to replace the whole hard drive with a new one after backing up of data present in the previous hard drive.

Troubleshoot Hard Disk Issue Manually

There is an in-built disk check & repair tool in Windows 10/8/7. But that tool is only capable of recovering data up to some extent. At any point of time, if you feel that your PC is creating some real issues with the performance, then you have to check the whole hard drive instantly.

  • Open This PC on Windows 10.
  • Right click on the partition that may have bad sectors. If you’re not sure, just repeat the steps on each partition one by one.
  • Choose Properties on the right-click menu, then navigate to Tools tab.
  • Deploy hard disk checking and repairing on Error checking and Optimize and defragment drive.

The in-built tool is quite handy, but more often than not it can only boost computer performance slightly. If the issues are not resolved by your PC itself, then you are supposed to take the help of external software which will help you out in this task.

We have prepared a list of top 7 freeware which will help you check and repair your hard drive effectively. Compatibility may be an issue with a particular freeware, but we assure you that all of them are really very good to resolve this big issue. So, let’s have a quick look on all of them.

Important: Repairing bad sectors with the following tools will remove the data stored on the bad sectors. You’re highly suggested use Jihosoft File Recovery to recover data from hard disk drive that are missing or inaccessible before trying any of them.

Best 7 Bad Sector Repair Software for Free

1) Disk Genius

Disk Genius is one of the most popular hard disk management tools among IT professionals, but not everyone knows that it also features with bad sector checking and repairing functions. The feature is hidden in Disk menu on the top bar where you can see and open Verify Or Repair Bad Sectors.

Though it is just a sub-function, Disk Genius is still qualified as the top 1 free back sector check & repair tool. The conditions of hard disk sectors will be presented by blocks in various colors presenting a straightforward report, then you just need to click Repair button to start the automatic repairing of hard disk bad sectors.

2) Data Lifeguard Diagnostic by WD

This software tool is probably one of the best software you will find to check and repair WD hard drives. Compatible with both Windows and Mac, Data Lifeguard will help you out to check all the sectors of your hard drive. Whether it is good or bad sectors, it will detect all the issues and create a detailed report. You can analyze the full report and take necessary measures to avoid data loss or other accidents.

Data Lifeguard Diagnostic supports WD Blue SSHD, WD Blue, WD Green, WD Desktop performance, WD S25, WD Xe, WD Black, WD Black SSHD, WD VelociRaptor, WD Purple, WD Ae, WD Red, WD Red Pro and much more to be listed. Check on the official website if your hard disk is not on the list.

3) SeaTools by Seagate

This tool developed by Seagate is a diagnostic tool that helps users determine the condition of your hard disk drive. SeaTools is from the well-known company in the industry of hard disk manufacture, but it also supports some non-Seagate hard disks. This software can be used in both Windows and Mac.

The user-interface is up to date which makes the job of the users very easy. That’s why Seatools is a pro to check the bad sectors of hard disk. In the whole PC scan, it will check all the files and sectors of hard disk whether it is internal or external,

4) Check Disk

Check Disk by Paehl is another powerful tool which can detect and fix the bad sectors of hard disk with an ease. This software comes with multi-language support system and that’s why users from all around the world choose this software for their personal use. The only drawback of this software is that it is exclusively available for the Windows users and not for Mac users. Otherwise, it is so called beast in this section to check the bad sectors of hard drive.

The full disk scan check will never let an issue to be left undetected. That’s why the name Check Disk really suits this software for sure. Almost all types of hard disks are compatible with this software. You can easily check on the website of Check Disk whose link is given above.

5) HDD Scan

Almost every type of SSD and HHD are compatible with this awesome software tool which is only compatible with Windows operating system. All types of defected and bad sectors present on the hard drives are fixed by this software automatically. You just have to give the command to run the full PC scan and the scan reports will get displayed in front of you within a few minutes depending on the size of the hard drive. All the reports can be saved in MHT format in the PC for the analyzation. This software is also well capable of changing some of the HDD parameter to fix the issues. If you use this software on your PC, then you will hardly suffer from any bad sector of hard disk at all.

6) Macrorit Disk Scanner

The real-time whole disk scan available in this software scanner will let you to find all the issues regarding the bad sectors. You can also track the status of the running scan process in a pop-up window. And as like other software tools, this software will also let you to download the file of scan process on your PC. PCs running on Windows OS are compatible with this software and moreover, almost every type of HDD and SDD is supported. So, at least try this software once.

7) Abelssoft Check Drive

This is our last pick in this list but the results which you can extract from this software are very helpful for users. As like other software tools we have mentioned, this tool will also serve you in the best possible manner. The real-time hard disk scan will let you to analyze all the bad sectors of hard disk very easily. This software will surely provide you the easiest way in which you can resolve all the issues and bad sectors present in the hard drive of your PC. Abelssoft check drive software is available in both paid and free versions. So, it is up to you that which subscription do you want for your PC.


This article concludes that bad sectors present in the hard drives need to be fixed as soon as possible because the consequence can cost your whole data. These bad sector repair tools will definitely help you in this task in the right direction. If you use any other software which can replace the software present in this list, then please inform us in the comments section.

Related Articles

New Articles

When bad sectors appear on the disk especially on WD My Passport hard drives, it will result in hard drive crashes or failures, poor performance, data loss disaster, system boot problems, etc., problems. Follow provided solutions on this page to protect your disk data and repair bad sectors on your WD HDD or other devices with ease:

Part 1. Check WD HDD Bad Sectors (2 Ways)
Part 2. Replace WD HDD with Bad Sectors to A Good One (No Data Loss)
Part 3. WD HDD Bad Sector Repair Tools & Solutions (4 Methods)

Western Digital hard drives are one of the popular hard drives in the world. It can become quite difficult and annoying if your WD HDD contains bad sectors. Don't worry! Follow the reliable methods below to repair bad sectors on your Western Digital HDD immediately.

Part 1. Check the WD HDD Bad Sectors

When you are faced with bad sectors on WD HDD, the first thing to do is to know the situation. You need to check the bad sectors.

To check the bad sectors on your hard disk, you need a free tool to help you. EaseUS free partition software - Partition Master and Western Digital Data Lifeguard can both help. Try any one to test and check how many bad sectors are existing on your drive.

# 1. Check WD HDD Bad Sectors with EaseUS Partition Master Free

Trusted and recommended by millions of users, EaseUS Partition Master Free with its Surface Test feature is able to check bad sectors on hard disk, USB flash drive, pen drive, SD memory card and other storage devices without formatting. The Surface Test feature will identify bad sectors by reviewing the hard drive.

Step 1. Connect your device to PC, launch EaseUS free partition manager, right-click the WD HDD partition and click 'Surface test'.

Step 2. Wait for the operation to finish. All found bad sectors will be marked as red.

Repeat the process if your drive contains several partitions.

Once it finds bad sectors, it will make bad sectors with red color and let the operating system not to use them so to protect the saved data. You will know how many bad sectors are existing on your WD hard drive from the test result.

If there are too many bad sectors, the scanning process will be stuck. Wait patiently.
If the error is serious, with an abnormal noise coming out, during the operation, method in Part 2 may not clone your disk with data to a good drive.
What can be cloned is still a case where the error is not serious.

# 2. Test Bad Sectors Using Western Digital Data Lifeguard

Many users mistakenly take Western Digital Data Lifeguard as a bad sector repair tool as it can test the existing bad sectors on WD HDD and other types of storage devices.

It's Extended Test feature actually can only be applied to detect bad sectors. The test may take several hours (which is not as efficient as EaseUS Partition Master) depending one the size of the drive.

Step 1. Download Data LifeGuard Diagnostic ( and extract WinDlg.exe from the ZIP file.

Step 2. Right-click WinDlg.exe and select 'Run as Administrator'.

Step 3. Put a checkmark on 'I accept this License Agreement' and click 'Next' to continue.

This will let the program detect the installed hard drives on your PC.

Step 4. Select and highlight the hard disk you want to test and click the 'Run test' button.

Step 5. In DLGDIAG, select 'Option', choose 'EXTENDED Test'.

Step 6. Click 'Start', and then wait for the test to finish.

Step 7. Close the test window, and click 'View Test Result' on the new pop up window.

Check the test result and if you see Toll many bad sectors detected marked in red, you should follow part 2 to repair the bad sectors immediately.

You should know that there is no all-in-one bad sector repair tool or solution. To fully protect your data and repair existing bad sectors on your disk, follow guide tips one by one in the next two parts.

Part 2. Replace Western Digital Hard Drive with Bad Sector to A Good One

If the disk is badly damaged, it is impossible to repair the bad sectors. In case of this, your wise choice is to replace the disk and restore lost data as much as possible before bad sectors take over your WD HDD. Here we’d like to advise you to try powerful disk cloning software - EaseUS Disk Copy which is fully compatible with all OS.

Video Tutorial for Disk Cloning

For disk cloning, the video has listed the details you need to mention. If you plan to replace the western digital hard drive with bad sector to a good one, you can check the tutorial.

Do remember to connect your good new hard drive to the computer as a storage device before cloning the Western Digital hard drive with bad sectors to the good one. EaseUS Disk Copy will skip the existing bad sectors, only taking your data to the new disk.

Step 1: Download, install and run EaseUS Disk Copy on your PC.

Click 'Disk Mode' and select the hard drive that you want to copy or clone. Click 'Next' to continue.

Step 2: Select the destination disk.

Note: The destination disk should be at least the same big or even larger than the source disk if you want to copy or clone the source hard disk.

Step 3: Click 'OK' to confirm if the program asks to erase data on the destination disk.

Step 4: Check and edit the disk layout.

If your destination disk is an SSD drive, do remember to Check the option if the target is SSD.

Step 5: Click 'Proceed' to start the hard drive cloning process.

All you need to do is to wait for the process to complete. You can apply and activate this software to help you upgrade and clone the hard drive with bad sectors and restore data as much as possible.

And then shut down your computer, insert the newly upgrade hard drive to your computer and replace the old Western Digital hard drive, set the computer to boot from a new hard drive instead of the old one in BIOS. Then you can see the precious data you have restored.

If your hard drive still can work with the existing bad sectors and you have no plan to replace the disk, back up your important data to another device.
Then follow bad sector repair tools for help. Some of them may cause data loss more or less.

Part 3. Fix Bad Sectors - WD HDD Bad Sector Repair Tools & Solutions

There are many Windows built-in tools that can help to fix bad sectors on your WD HDD. Follow to see how to repair bad sectors on your disk now:

# 1. Run Disk Check in File Explorer

Open This PC in File Explorer > Right-click the WD hard drive partition and select 'Properties' > On the Tools tab, click 'Check' button under the top Error checking > Scan drive if wanted or Repair drive if errors were found.

# 2. Run CHKDSK Command and Format Hard Drive

Step 1. Run CHKDSK command to fix soft bad sectors.

1. Press the Windows key and type cmd.

2. Right-click 'Command Prompt' and choose 'Run as administrator'.

3. Type chkdsk E: /f /r /x and hit Enter. (Replace E with the drive letter of your hard drive.)

Step 2. Format hard drive to usable again

1. Open Windows File Explorer, locate and right-click on your hard drive.

2. Select 'Format', reset the file system as NTFS, tick 'Quick Format' and click 'Start'.

# 3. Use CHKDSK Alternative - EaseUS Partition Master Free

The Check File System feature in EaseUS Partition Master is an alternative tool to CHKDSK command. You may also apply this feature to repair logical bad sectors on your WD HDD:

Step 1: Open EaseUS Partition Master on your computer. Then locate the disk, right-click the partition you want to check, and choose 'Check File System'.

Step 2: In the Check File System window, keep the 'Try to fix errors if found' option selected and click 'Start'.

Mac disk utility check for bad sectors

Step 3: The software will begin checking your partition file system on your disk. When it has completed, click 'Finish'.

# 4. Perform Low-level Format

The traditional way to remove or repair bad sectors is to perform a low-level format. It will regenerate the disk layout and structure. Serious data loss is unavoidable. Also, it cannot be executed by ordinary users.

A better resolution for this case is to replace hard drive with data to a good one as recommended in Part 2. If you insist, back up data to another disk first and then take your drive to the local repair center or your manufature for low-level format.


This page mainly answers the questions about 'How to test if bad sectors existing on your disk' and 'How do repair bad sectors on WD HDD'.

Windows 10 Scan Disk For Bad Sectors

To test bad sectors, you may try Surface Test in EaseUS Partition Master or run Extended Test on Western Digital Data Lifeguard.

To protect your disk from being damaged by bad sectors and your previous data, you should immediately clone and replace the WD HDD with bad sector to a good drive.


Then follow the four bad sector repair tools to fix bad sectors on your WD HDD disk.

FAQs about Bad Sectors

Some of you may have even more concerns and doubts about bad sectors. Check the FAQs below, you may find a satsifying answer.

1. How to fix bad sectors on WD external hard drive?

The ways to fix bad sectors on WD external hard drive are similar to the recommended tools on this page. You may check the disk first.

If the WD external hard drive contains many bad sectors, clone it with EaseUS Disk Copy with data to a good external hard drive immediately.

If there is very a few bad sectors, run CHDKSK, Disk Check, or EaseUS Partiiton Master with its Check File System feature in Part 3 to get rid of bad sectors immediately.

2. What does recover bad sectors tool do?

Basically, there are two types of bad sector repair tools available on market.

1). Test bad sector, no repair; 2). Test bad sector, repair.

The situation mainly depends on how many bad sectors are found on the target device. For very few or soft bad sectors, Disk Check, CHKDSK, EaseUS Partition Master with Check File System feature, can all work to recover the bad sectors.

For too many bad sectors, the disk is seriously damanged, there is no way to repair them all. The best resolution towards this issue is to follow Part 2, replacing old disk with data to a new one, skiping all bad sectors.

3. Can a hard drive with bad sectors be repaired?

The answer towards this question is Yes and No.

The reason is that bad sectors can be devided into soft bad sectors and hard bad sectors. And the answer to repair soft bad sectors on a hard drive is yes. The answer to repair hard bad sectors is no.

Price: $9.99 (£7.99 or around AUS$14)While you’ve been able to snap programs to the edge of the screen in Windows since Windows 7, Apple didn’t have a solution until OS X El Capitan. . Get it from:. Best mac app for iphone. What’s more, even then it lacked some of the comprehensiveness of Microsoft’s alternative.

Check Mac Disk For Bad Sectors Without

As for soft bad sectors repair, you can refer to Part 3 on this page for ditailed guidance. If you need more information about bad sectors, follow How to Repair A Bad Sector in Windows 10/8/7 as a guide.

Comments are closed.