Thank you for choosing Toshiba for all your storage device needs. Toshiba Support is right at your fingertip. Let us know what we can do to assist you. Download and install the best free apps for Diagnostic Software on Windows, Mac, iOS, and Android from CNET Download.com, your trusted source for the top software picks.

1. Hitachi Hdd Diagnostic Software
2. Best Hdd Diagnostic Tool
3. Hard Disk Diagnostics
4. Hdd Diagnostic Tool Mac Os

• On your Mac, choose Apple menu Restart, then press and hold the D key while your Mac restarts. When the Apple Hardware Test chooser screen appears, select the language you want to use, then press the Return key or click the right arrow button. If you don’t see the chooser screen, Apple Hardware Test may not be available on your Mac.
• Mac OS Diagnostics The MacOS has great tools for testing hard drives. This program is called First Aid. Always backup your data before running First Aid scans of your hard drive.

After isolating an issue on your Mac to a possible hardware issue, you can use Apple Diagnostics to help determine which hardware component might be causing the issue. Apple Diagnostics also suggests solutions and helps you contact Apple Support for assistance.

If your Mac was introduced before June 2013, it uses Apple Hardware Test instead.

How to use Apple Diagnostics

1. Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power.
2. Make sure that your Mac is on a hard, flat, stable surface with good ventilation.
3. Shut down your Mac.
4. Turn on your Mac, then immediately press and hold the D key on your keyboard. Keep holding until you see a screen asking you to choose your language. When Apple Diagnostics knows your language, it displays a progress bar indicating that it's checking your Mac:
   
5. Checking your Mac takes 2 or 3 minutes. If any issues are found, Apple Diagnostics suggests solutions and provides reference codes. Note the reference codes before continuing.
   
6. Choose from these options:
   • To repeat the test, click ”Run the test again” or press Command (⌘)-R.
   • For more information, including details about your service and support options, click ”Get started” or press Command-G.
   • To restart your Mac, click Restart or press R.
   • To shut down, click Shut Down or press S.

If you choose to get more information, your Mac starts up from macOS Recovery and displays a web page asking you to choose your country or region. Click ”Agree to send” to send your serial number and reference codes to Apple. Then follow the onscreen service and support instructions. When you're done, you can choose Restart or Shut Down from the Apple menu.

This step requires an Internet connection. If you're not connected to the Internet, you'll see a page describing how to get connected.

Learn more

If holding down the D key at startup doesn't start Apple Diagnostics:

• If you're using a firmware password, turn it off. You can turn it on again after using Apple Diagnostics.
• Hold down Option-D at startup to attempt to start Apple Diagnostics over the Internet.

Drive errors, corruptions, or bad sectors can be caused by improper shutdowns, harmful software, virus attack, etc. Finally, these errors result in Windows 10/8/7 system crash, hard drive failure, data loss disaster, and some other accidents.

Top 4 Methods to Windows 10 Hard Drive Test/Diagnostic

In this case, a regular hard drive diagnostic in Windows 10 is always a good idea if you don't want to be caught by any of these unpleasant problems. There are four ways to perform a free hard drive test in Windows 10/8/7. Follow any one of the methods to solve your problems with ease.

Method 1. Perform Hard Drive Error Diagnostic with Software

Applies to Windows 10, 8, 7, Vista, XP

If your Windows 10 computer is throwing up errors, crashing, or otherwise misbehaving, the easiest way to solve it is by turning to an error-checking software. And my suggestion is EaseUS disk error checking software - EaseUS Partition Master Free. Even you don't have much technical know-how, you can quickly check and repair disk errors with this freeware. This free software can not only test and fix disk errors, but also have many other disk management skills.

Highlights:

• Resize or move the partition to adjust the partition size
• Clone disk with simple clicks
• Format a hard drive, USB, SD card or SSD for free
• Delete or wipe a partition quickly

You can use this software to test and repair your hard disk health for errors, corruption, and bad sectors and get better performance.

Perform disk check on Windows 10:

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'.

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

It is simple and easy to test a hard drive in Windows 10/8/7 with EaseUS partition magic software.

Method 2. Perform Hard Drive Error Check with Windows Properties

Windows has a built-in tool that can scan your disk to find system errors and bad sectors and show if there are any problems with your hard drive. This function can scan and fix problems. Here is the way to check hard disk health and repair bad sectors and errors, if possible.

Step 1. Open 'This PC', right-click the HDD/SSD you want to scan and choose 'Properties'.

Step 2. Under the 'Tools' tab, click the 'Check' button under the Error checking section.

Step 3. Next, you can choose to Scan or Repair the drive if errors were found.

Step 4. When the scanning finishes, click on the Show Details link to see the CHDSK log in Event Viewer.

Method 3. Use Command Prompt to Perform Hard Drive Diagnostic

Another way to perform a disk diagnostic in Windows 10 is by using CMD. Whenever you find your hard drive performs poorly, you can run CHKDSK to do the job. Here's how to run CHKDSK to repair disk errors in Windows 10.

Step 1. Press the Windows key and type cmd.

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

Step 3. Enter the following command:

'E' is the drive letter of the partition you want to check and repair errors. Found errors will be fixed automatically with this command.

Step 4. In case of possible system file corruption, you are recommended to run the System File Checker tool to repair missing or corrupted system files after running CHKDSK. In the Command Prompt, type the following command and hit 'Enter'.

Also read: CHKDSK cannot continue in read-only mode

Method 4. Check and Repair Disk Using CHKDSK Alternative (Also Free)

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.

Hitachi Hdd Diagnostic Software

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

Conclusion

If you are looking for hard drive diagnostics (SD card, Flash USB and SSD drives), turn to this content for help. The four ways above can always make hard drive error checking easy and fast.

Disk Doctor Windows 10 Related Questions

If you want to get some further help or additional information, read these questions and answers below.

1. How to run CHKDSK?

To run CHKDSK:

Step 1. Press the Windows key and type cmd.

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

Step 3. Enter the following command:

chkdsk E: /f /r /x

2. How to check the disk for free?

EaseUS partition tool makes it effortless check disk:

Step 1. Open EaseUS Partition Master on your computer. Locate the disk, right-click the partition, and choose 'Check File System'.

Best Hdd Diagnostic Tool

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

Step 3. When it has completed, click 'Finish'.

3. Is it free to perform disk error checking?

Hard Disk Diagnostics

Yes, it is. There are four ways to test your hard drive:

Hdd Diagnostic Tool Mac Os

• Perform Hard Drive Error Diagnostic with Software
• Make use of Windows Properties.
• Use Command Prompt
• Try CHKDSK Alternative