Mac Check Disk For Bad Sectors

  1. Hard Disk Bad Sector Check Software
  2. Check Disk For Bad Sectors
  3. Mac Check Disk For Bad Sectors Drive
  4. Mac Os Check Disk For Bad Sectors

Bad sectors on you hard disk prevent you from smoothly accessing your device and using the files. Luckily, you have the chance to repair bad sectors using CHKDSK command. If there is data loss on your disk after removing bad sectors from your hard disk using CMD, you can try EaseUS Data Recovery Wizard to recover your lost files.

Quick navigation on how to repair and remove bad sectors from hard disk:

HDD Regenerator. It is one of the best software to repair hard drive bad sectors that you can find. Partition Manager Macrorit to Check Bad Sectors. Free Download check bad sector software. This all-in-one software can defrag the Mac’s hard drive once it starts slowing down.

Workable SolutionsStep-by-step Troubleshooting
Fix 1. Repair Bad Sectors Using CMDPress the 'Windows' key and type cmd. Right-click 'Command Prompt' and choose 'Run as administrator'. In Command Prompt, enter the following command: chkdsk E: /f /r /x. If you don't want to perform the disk checking and repairing process in CMD...Full steps
Fix 2. Recover Data from Hard DiskLaunch EaseUS Data Recovery Wizard, hover on the partition, external hard drive, USB, or memory card where you want to perform erased data recovery, and then click 'Scan'. Select the files you want to recover. After choosing the data, click 'Recover'...Full steps

All About Bad Sectors

How to check whether there is bad sector on a USB harddisk on OS X? (2012-02-27) links to another related question. More recently, in Ask Different: Figuring out bad sectors in my Macintosh HD (2013-03-05) Whatever you use. Be aware that relocation (or remapping or sparing,. Recover Data on the Bad Sector Hard Drive. Although you still got a chance to correct bad sectors.

A sector is a subdivision of a track (a circular path on the surface of a disk) on your hard disk that stores a fixed amount of data. A bad sector is a sector that appears to be defective and it won't respond to read or write operations. There are two types of bad sectors:

Physical Bad Sector (Hard Bad Sectors)

As the name indicates, physical bad sectors are caused by physical damage on the hard disk. This type of bad sectors cannot be repaired using CHKDSK or any other tools. If you want to continue using a hard disk with physical bad sectors, what you can do is to use some third-party tool to block these sectors on the hard disk and prevent the system and programs from visiting them.

Logical Bad Sector (Soft Bad Sectors)

Unlike physical bad sectors, logical bad sectors generally result from software errors like a sudden shutdown of your computer and virus attacks. In most of the cases, the operating system will mark a sector as bad when they try to read data from the sector and find the error-correcting code doesn't match the contents of it. Fortunately, logical bad sectors can be repaired using CHKDSK.

How to Repair Bad Sectors on Hard Disk Permanently Using CMD

If there are logical bad sectors on your hard disk, you can repair them using the CHKDSK command. CHKDSK is a Windows built-in utility used to check the integrity of the disk and fix the logical errors found, including bad sectors. Being able to repair hard disk bad sectors, it is your first choice to repair a corrupted hard drive.

To permanently remove bad sector from hard disk using cmd:

Step 1. Press the 'Windows' key and type cmd.

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

Step 3. In Command Prompt, enter the following command:

Notes: 'E' is the drive letter of the disk you want to repair bad sectors from. The '/f' parameter tells CHKDSK to fix any errors it finds; '/r' tells it to locate the bad sectors on the drive and recover readable information; '/x' forces the drive to dismount before the process starts.

If you don't want to perform the disk checking and repairing process in CMD, you can choose to use the disk check feature, which works the same as CHKDSK.

Step 1. Open 'This PC', right-click the drive that has bad sectors and choose 'Properties'.

Step 2. Go to the 'Tools' tab.

Step 3. Click 'Check' to check and repair the bad sectors on your hard disk.

If you don't have any technical know-how and want to minimize data risks, using third-party software could be a better choice. The Command line is suitable for computer professionals since wrong commands can cause severe problems. Therefore, we strongly recommend you try an automatic command line alternative.

EaseUS Tools M is a practical computer fixing tool that is safe and light-weighted. It's a perfect alternative to CHKDSK command. Use this one-click tool to solve your computer issues.

To fix file system error or disk error:

Step 1: DOWNLOAD EaseUS Tools M for Free and install it.

Step 2: Open the software and select the 'File showing' option.

Step 3: Choose the drive and wait for repairing. After the operation completes, click the 'View' button to check the drive.

Recover Data from the Hard Disk After Repairing Bad Sectors

Hard Disk Bad Sector Check Software


If CHKDSK stuck and failed to remove any bad sector from the hard disk, or it deleted your data on the hard disk, you may need to perform data recovery from your storage medium. In such a case, the hard drive recovery software - EaseUS Data Recovery Wizard can help.

It's almost impossible to recover data from the bad sectors since they are inaccessible. However, data recovery software may be helpful if your device becomes inaccessible because of bad sectors.

Step 1. Select a location and start scanning.

Launch EaseUS Data Recovery Wizard, hover on the partition, external hard drive, USB, or memory card where you want to perform erased data recovery, and then click 'Scan'.

Step 2. Select the files you want to recover.

When the scanning has finished, select the deleted files you want to recover. Double-click the file to preview its content if you need to.

Step 3. Recover lost data.

After choosing the data, click 'Recover' and choose a location on another drive to save the deleted data.

The Bottom Line

Bad sectors are sections of your computer's hard drive that have been damaged and have lost the ability to save and store your data. And any data stored in a bad sector is likely to be lost. If you cannot open your files or programs properly, it is most possible that the hard disk might have filled with bad sectors which make your data unreadable or corrupt. To make your hard disk usable, you should remove bad sectors from hard disk using CHKDSK, which will repair the logical bad sectors and tell the system to jump over physical bad sectors.

Sep 27,2020 • Filed to: Data Recovery Tips • Proven solutions

How do I read from a bad drive?

I have a drive from a PC that won't boot up because of a bad sector. I have connected this drive as an external drive to another operating PC. The aim is recognized as 'Microsoft Office click-to-run 2010 (protected) 2010' but when I click on it, the PC says 'access denied'. I want to be able to read the data off of this corrupted disc. Is this possible?

The hard disk role in a computer system can't be argued as it is where you will store the operating system and other files. Though other storage devices like USB flash drives, CD/DVD, etc., can't be used to keep the operating system for one or other reasons. Hard drive bad sectors make the hard drive inaccessible to read and write operations and are very common. The bad sectors' data may be lost temporarily and permanently depending on the cause, i.e., hardware or software. Hardware errors are impossible to fix, and it would be best to back up the hard drive and replace it. Software errors can be corrected with a software application designed for a specific task.

Part 1. The Best 5 Hard Disk Bad Sector Removal Software

1. HDD Regenerator

It is one of the best software to repair hard drive bad sectors that you can find online. HDD Regenerator can scan the hard drive for bad sectors and correct them if possible. If repair is not possible, you can at least some information stored on it with an HDD Regenerator's help.


Allow repair damage that otherwise is not possible.

Ensure data security in bad sectors.

Easy retrieval of information stored on it.


The free version can only repair one bad sector.

Expensive to buy the full version.

2. Flobo Hard Disk Repair

Flobo hard disk regenerator is lousy sector removal software that allows users to recover their hard drive. Flobo hard disk bad sector repair software makes the operating system of your computer working again. This utility creates a scan of the hard drive, shows the bad sectors, and predicts the hard drive failure. It monitors the health status of the hard drive and repairs any errors encountered. With the predictions about the hard drive failure, you will be able to save your data from being lost by making a backup at the right time.


Repair hard disk errors.

Check the health status of the hard drive.

Accurate predictions about drive failure.

Check Disk For Bad Sectors

Suggestion for backing up data.


Not compatible with the latest version of Windows, like Windows 8.1/10.

3. HDDScan

HDDScan utility is a hard drive diagnostics tool that you can use to repair the hard drive bad sectors. When you work with HDDScan, you will perform a detailed check on the errors on the hard drive due to software problems. You can also perform a health check of the hard drive for degradation and predict possible failure. This will be helpful as it will help make a backup of your hard drive band prevent permanent loss of the data.


Supports a large number of storage devices.

Fast disk checkup.

Allow reading and analyzing S.M.A.R.T. parameters.

Compatible with the latest Windows 8.1/10.


The simultaneous test may generate different reports.

Not reliable for checking USB drives.

4. [email protected] Hard Disk Monitor

As the name suggests, [email protected] Hard Disk Monitor is a utility software to check the hard drive's health status. It supports monitoring and displaying hard drive bad sectors. The temperature is also shown in it. The reports can be used to prevent data loss due to hard drive corruption.


Remote monitoring.

Monitors temperature and makes a temperature graph.

Send email notifications about the condition of critical drives.

Straightforward to use and simple interface.


The same license can’t be used for more computers.

5. Macrorit Disk Scanner

Macrorit Disk Scanner is a disk checkup utility that checks the hard drive for bad sectors and marks the bad sectors. This is one of the fastest tools to scan for the hard drive bad sectors and supports many hard drives. It also supports portable operation, meaning you can check an offline disk by copying the tool to a USB flash drive.


It supports many storage devices.

Compatible with all versions of Windows.

Selective scanning options.

Automatic saving of scan results.


The free version supports limited features.

The unlimited edition is as expensive as $99.

Mac Check Disk For Bad Sectors Drive

Part 2. How to Check and Repair Bad Sector in Hard Drive

In Windows, there is a built-in utility that allows checking hard drive bad sectors. It can also repair the bad sectors if they are not caused by physical damage or device failure. The tool's working is similar for all versions of windows like XP, 7, 8, 8.1, and 10. Follow the below steps to check and repair bad driving sectors with the Windows' built-in Error Checking tool.

Step 1: Go to My Computer/Computer/This PC as per the Windows version.

Step 2: Right-click on the hard drive you want to scan for errors and click 'Properties'.

Step 3: Now, click on the 'Tools' tab in the Properties dialog box.

Step 4: Then click on the 'Check Now' button below the 'Error-Checking' section.

Mac Os Check Disk For Bad Sectors

Step 5: Check both options in the dialog box appeared and clicked 'Start.' This will start the scan and repair task.

Close the programs and files in use on the drive which you want to check. This is because the Error Checking tool needs to dismount the drive before starting the checkup, and opened files can cause conflict with it. You can also schedule a disk checkup. Error Checker will automatically run the disk checkup when you boot the system the next time.

Part 3. The 5 Main Reasons May Cause Hard Disk Bad Sector

1. Virus Attack May Cause Hard Disk Bad Sector

Virus infection is one of the main reasons that can cause hard disk bad sectors. Many viruses can remove or modify system registries and file system table. If they release a link to a file or folder from the system registry, it will become inaccessible. Viruses can cause logical hard drive bad sectors, but they can't damage the hard drive physically. Generally, repairing destructive analytical industries are more comfortable to remove, and for physical damage, you would need to replace the hard drive. Removing the viruses from the system will solve any lousy sector errors on your hard drive.

2. Sudden Shutdown May Cause Hard Disk Bad Sector

The hard drive uses physical parts such as drive heads to read and write the data on it. When the aim is active, it always moves from one location of the hard drive to another. If you don't correctly shutdown the system, the drive head may damage the disk. Once the hard drive is damaged, the damaged part won't be available for reading and write operations and cause bad sectors. Moreover, this type of physical hard drive bad sectors can't be repaired. They should be marked off-limits for write operations as the data may not be written and gets lost. Blue Screen of Death error may also cause a sudden shutdown.

3. File System Error May Cause Hard Disk Bad Sector

The data on a hard drive is stored adhering to a specific design. The file system does the task of allocating space to a file, and an error in the file system can compromise the whole system integrity. Some parts on the hard drive may become inaccessible for reading and write operations. You can use the chad utility on Windows to scan and fix file system errors.

4. Excess Heat May Cause Hard Disk Bad Sector

Heat is the enemy of every computer component, and the same is the case with the hard drive. Hard drives are not meant to be used at high temperatures as the disk can get damaged. Moreover, it can damage other internal components in the hard disk. So, hard drive bad sectors can be caused by overheating, and if you don't want to lose data due to this, use the hard drive at optimum temperatures.

5. Age

Every hard drive suffers from wear and tear with use and has a fixed life. If you haven't replaced your hard disks for a long time, your data may be at risk. Hard Drive accumulates some damage over time, and this can cause hard drive bad sectors. The rate at which this can occur depends on how you use it, but it will give in someday. So it is better to keep a backup of your data so that it can be recovered in case your hard drive fails.

Part 4. How to Recover Data from External Hard Drive

The major problem with hard drive bad sectors is that it can make the data stored inaccessible, making it permanently lost. That is why you need the Recoverit Data Recovery to recover data from corrupted hard drives, USB flash drives, memory cards, and others. This recovery tool has been the best software for recovering lost data due to accident deletion, storage corruption, virus infection, etc.

Recoverit Data Recovery

Why Choose This Hard Drive Data Recovery Software:

  • It is compatible with both Windows and Mac operating systems.
  • It supports many storage device types, including hard drives, USB flash drives, SD cards, etc.
  • All major types of files can be recovered, including music, images, video, documents, emails, and archives.
  • It has a deep scan features for in-depth scanning of the hard drive for searching files to recover.
2,332,067 people have downloaded it

Easy Steps to Recover Lost Data from External Hard Drive

Step 1: Get Recoverit Hard Drive Recovery Software

Download and install Recoverit on your computer. After installing it, launch the software.

Step 2: Choose the Hard Drive

Select the drive from which you want to recover files and click 'Start'. This will start the scanning process. It is also possible to recover data from mobile devices if they support mounting the internal storage.

Step 3. Recover Data from External Hard Drive

Preview the files that are found on the drive for recovery. The results will have all the files like file type, name, and size in Recoverit Data Recovery. Hit the 'Recover' button and select the location where to recover the file.

Conclusion: Now, you've learned more about 5 Hard Disk Bad Sector Removal Software. You can choose the right software according to your own needs. Recoverit comes with powerful functions to help you recover data from the external hard drives. You can free download and have a try.

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