A hard drive diagnostic is a tool or utility that is used to test a hard drive for errors, bad sectors, and other potential issues. This type of diagnostic can help to determine if a hard drive is functioning properly and if it needs to be repaired or replaced.
To run a hard drive diagnostic, you will need to use a specialized tool or utility. These tools are often provided by the manufacturer of the hard drive, and they can be downloaded from the manufacturer’s website.
Once you have downloaded and installed the diagnostic tool, you can use it to scan your hard drive for errors and potential problems. The tool will typically provide a detailed report of any issues that it finds, along with instructions on how to fix them.

It’s important to note that running a diagnostic on your hard drive may take some time, depending on the size of the drive and the number of errors that it finds. It’s also important to make sure that you have a recent backup of your data before running a diagnostic, as the process may cause data loss in some cases.
CrystalDiskInfo is a comprehensive hard drive diagnostic tool that can test and display a set of tested drive parameters.
It’s not just the hdd drives that CrystalDiskInfo supports, in fact you can also get the relevant data from the installed SSDs as well. It does a great job of monitoring disk health, making sure that data is not lost.
Installing CrystalDiskInfo is not complicated, and once you start the application, you will be able to start scanning the drives. The main information provided at startup is basic such as firmware, interface, drive letter, and buffer size.
The most important data collected can be summarized as a percentage of read error, turn time, start/stop count, frequency of search failures, and other vital data for the status of the unit that was tested. CrystalDriveInfo can also be configured to send alerts via desktop, email, or sounds. You can also access an event log.
If you’re looking for a powerful drive management and diagnostics tool, CrystalDiskInfo is a great option that provides most of the relevant data from the S.M.A.R.T analysis.
Features and highlights
Supports some external USB disks
Health and temperature control
Information chart S.M.A.R.T.
Check AAM/APM settings
Download CrystalDiskInfo Hard drive diagnostic tool here
Hard drive diagnostic – more useful free tools
There are several free tools available for performing hard drive diagnostics, including:
HD Tune: This tool can be used to benchmark your hard drive and check for errors, as well as to monitor the health of your hard drive over time.
- Hard Disk Sentinel: This tool provides detailed information about your hard drive, including the temperature, S.M.A.R.T. status, and disk performance. It also includes the ability to set up alerts for when certain thresholds are reached, and provides a full hard disk analysis.
- DiskCheckup: This tool provides detailed information about the health of your hard drive, including the temperature, S.M.A.R.T. status, and disk performance. It also includes the ability to set up alerts for when certain thresholds are reached and to schedule regular scans.
- GSmartControl: This tool provides detailed information about your hard drive, including the temperature, S.M.A.R.T. status, and disk performance. It also includes the ability to run self-tests on the drive, and to monitor the health of your hard drive over time.
- DiskScan: This tool allows you to scan your hard drive for bad sectors, and can also be used to benchmark your hard drive and check for errors.
These are some of the most popular and widely used tools available, but there are many other options available as well. It’s always recommended to backup your data before running any diagnostic tool to avoid data loss.