Check your SSD's health using built-in operating system tools or free third-party software

Your solid-state drive reports its own condition through a system called SMART (Self-Monitoring, Analysis and Reporting Technology). Windows, macOS, and Linux can all read this data. Most SSDs also come with manufacturer software that translates SMART information into plain language. You do not need to buy anything — Windows includes a built-in tool, and free programs like CrystalDiskInfo and Hard Disk Sentinel Community Edition show you the same numbers in an easier format.

The goal is to catch warning signs before your drive fails completely. An SSD that reports problems now gives you time to back up your files and order a replacement. A drive that fails without warning leaves you scrambling to recover data or replace the device while your computer is down.

Key Takeaways

  • SMART data is built into every SSD and reports wear, temperature, and error rates — you just need software to read it.
  • Windows includes a free SMART checker; macOS and Linux users can use free third-party tools like CrystalDiskInfo.
  • A healthy SSD shows a SMART status of "Good" or "Healthy" and temperatures below 50°C during normal use.
  • Warning signs include rising error counts, temperatures above 60°C, or a SMART status that changes from Good to Caution or Bad.
  • Check your SSD's health once a month or before major tasks like video editing or large file transfers.

How to check SMART data on Windows

Windows 11 and Windows 10 include a built-in SMART checker. Open Settings, go to System, then Storage, and scroll down to "Disk management options." Click "View disk details" and select your SSD. Windows will show you the drive's SMART status — it will say "Healthy," "Caution," or "Bad." If it says anything other than Healthy, your drive is reporting a problem and you should back up your files when ready.

This built-in tool shows only the overall status, not the individual numbers behind it. If you want more detail — like temperature, wear level, or specific error counts — you need a third-party tool. CrystalDiskInfo is free, works on Windows, and shows you exactly what each SMART value means. read it from the official CrystalDiskInfo website, install it, and it will automatically detect your SSD and display its health status in color: blue for good, yellow for caution, red for bad.

How to check SMART data on macOS

macOS does not include a built-in SMART checker in System Settings. You will need free software. CrystalDiskInfo has a macOS version, or you can use DriveDx, which is paid but includes a free trial. read CrystalDiskInfo for Mac from the official website, install it, and open the process. It will show your SSD's health status and temperature in the same color-coded format as the Windows version.

If you prefer the command line, you can also use Terminal to check SMART data directly. Open Terminal and type diskutil info / to see basic drive information, though this does not show full SMART details. For complete SMART data on macOS, the graphical tools are easier and more reliable.

How to check SMART data on Linux

Linux users can install smartmontools, a free command-line utility that reads SMART data from any drive. Open your terminal and type sudo apt install smartmontools (on Ubuntu or Debian) or the equivalent for your distribution. Once installed, type sudo smartctl -a /dev/sda to see full SMART information for your main drive. Replace sda with the correct device name if you have multiple drives.

The output will show you the drive's overall health assessment at the top, followed by detailed SMART attributes. Look for the line that says "SMART overall-health self-assessment test result" — it should say PASSED. If it says FAILED, your drive is reporting a problem. You can also use Gnome Disks (the graphical disk manager in GNOME desktop environments) to see SMART data without using the terminal.

What the numbers mean

SMART data includes several key measurements. Temperature is the easiest to understand — your SSD should stay below 50°C during normal use and below 60°C even during heavy work like video rendering or large file transfers. Temperatures above 70°C indicate a cooling problem and can shorten the drive's lifespan. Wear level or Media Wearout Indicator shows how much of the drive's write capacity you have used. A new drive starts at 100 and counts down; when it reaches 0, the drive can no longer write new data. Most SSDs last many years before this becomes a problem.

Reallocated Sector Count and Current Pending Sector Count measure bad spots on the drive. A few reallocated sectors are normal, but a rising count means the drive is failing. Uncorrectable Error Rate shows read errors the drive cannot fix. Any value above 0 is a warning sign. The overall SMART status summarizes all of these — if it says Good or Healthy, your drive is fine. If it says Caution or Warning, back up your files. If it says Bad or Critical, stop using the drive for new data and replace it.

When to check your SSD and what to do if there is a problem

Check your SSD's health once a month as part of routine maintenance. Also check it before you do something important — before a long trip where you will be working on the drive, before a major project like video editing, or before upgrading your operating system. If you notice your computer is running slowly or programs are freezing, check the SSD's health and temperature; a failing drive or overheating drive can cause both.

If your SSD shows a Caution or Bad status, back up your important files to an external drive or cloud storage when ready. Do not wait. Once you have a backup, contact the drive's manufacturer — most SSDs come with a warranty that covers failure, and the manufacturer can replace the drive or help you recover data. If the drive is still under warranty and shows signs of failure, you may be able to get a replacement without cost. Keep your receipt and warranty information in case you need it.

How to keep your SSD healthy

Most SSDs fail because of heat, power loss, or physical damage — not because they straightforward wear out. Keep your computer in a cool environment; if your laptop gets hot during normal use, use a cooling pad or improve airflow around your desktop. Make sure your computer has a stable power supply; power surges and sudden shutdowns can damage an SSD. If you use a laptop, avoid dropping it or subjecting it to physical shock.

Keep your drive from filling completely full. When an SSD is more than 90 percent full, it slows down and wears faster. Leave at least 10 percent of the drive empty. Also, avoid constantly writing and deleting large files — this is normal use and the drive is designed for it, but if you are doing this hundreds of times per day, you are accelerating wear. For most people, normal use will not cause problems for five to ten years or more.

Frequently Asked Questions

How often should I check my SSD's health?

Once a month is a good routine. If your computer is running slowly or you hear unusual sounds, check when ready. Also check before you do something important like traveling with your laptop or starting a major project.

What temperature is too hot for an SSD?

Below 50°C is ideal. Up to 60°C during heavy use is acceptable. Above 70°C means your drive is overheating and you should check your computer's cooling — clean dust from vents, use a cooling pad for laptops, or improve airflow around your desktop.

Can I fix a failing SSD, or do I have to replace it?

You cannot repair an SSD yourself. If SMART data shows a problem, back up your files and replace the drive. Most SSDs come with a warranty that covers failure — contact the manufacturer with your receipt to see if you can get a replacement.

What does it mean if my SSD shows "Caution" status?

Caution means the drive is reporting a problem but still works. Back up your files when ready and plan to replace the drive soon. You have time to get a replacement and transfer your data, but do not delay.

Is it normal for an SSD to have some reallocated sectors?

A few reallocated sectors are normal and do not mean the drive is failing. Watch the number over time — if it stays the same, you are fine. If it keeps rising, the drive is degrading and you should plan a replacement.