Windows 11 can check an SSD’s basic health without extra software, but the amount of information it shows depends on the drive. Supported NVMe SSDs may display estimated remaining life, available spare, temperature, and critical warnings in Settings. A SATA SSD may show little or no health information there even when it is working correctly.
Start with Windows Settings, confirm the result with PowerShell, and use the SSD manufacturer’s utility or a trusted SMART reader when you need drive-specific details. No single percentage can predict exactly when an SSD will fail, so health readings should support a backup plan rather than replace one.
Start with the right health check
| What you need to know | Best starting tool | Important limitation |
|---|---|---|
| Whether an NVMe drive has a critical warning | Windows Settings | Detailed health is not shown for every SSD |
| Windows’ overall physical-disk status | PowerShell | Healthy is a summary, not a complete SMART report |
| Wear, power-on time, total writes, and model-specific attributes | Manufacturer utility or SMART reader | Attribute names and raw values vary by manufacturer |
| Whether the drive is slow | A performance test and system diagnosis | Speed and physical health are different questions |
Back up irreplaceable files before running further tests when the SSD is disappearing, becoming read-only, corrupting files, or triggering a critical warning.
Check SSD health in Windows 11 Settings
This is the simplest check for a supported NVMe SSD:
- Press
Windows + Ito open Settings. - Select System > Storage.
- Open Advanced storage settings > Disks & volumes.
- Select the SSD and open Properties.
- Look for the Drive health section.
When supported, Windows may show four useful readings:
- Estimated remaining life: the manufacturer’s wear estimate expressed as a percentage.
- Available spare: reserved storage capacity that can replace worn or failed memory blocks.
- Temperature: the drive’s current reported temperature.
- Critical warning: a warning about low spare capacity, degraded reliability, read-only operation, or another serious condition.
Microsoft explains that its storage-health monitoring and critical warnings apply to NVMe SSDs, not SATA SSDs or hard disk drives. Therefore, a missing Drive health section is not itself evidence of failure. Use another method when Windows does not expose the data.
Interpret the Windows readings correctly
Estimated remaining life
A result such as 95% generally means the SSD has consumed about 5% of the endurance measure used by its manufacturer. It does not mean the drive will fail after a predictable number of days, nor does it guarantee that an unrelated controller or electronics failure cannot happen sooner.
A lower percentage deserves attention, but it should be considered alongside critical warnings, SMART attributes, warranty endurance, errors, and backups. There is no universal rule requiring every SSD to be replaced at 80% or 90% health.
Available spare
SSDs reserve spare flash capacity to replace memory blocks that can no longer be used reliably. The displayed value is normalized by the drive firmware. A critical warning is more meaningful than comparing the number with another model because manufacturers can use different thresholds.
Temperature
SSD temperature changes with workload, airflow, controller design, and model. A brief rise during a large transfer is different from sustained overheating accompanied by throttling, errors, or warnings. Check the manufacturer’s operating-temperature specification before treating one generic temperature number as a failure threshold.
Critical warning
A critical warning should be treated as a backup signal, not something to dismiss because the computer still starts. Microsoft recommends backing up data when Windows reports a critical storage warning. After the backup, check the drive with its manufacturer’s diagnostic utility and prepare for replacement if the warning persists or the vendor test fails.
Check the SSD status with PowerShell
PowerShell provides a quick second opinion from Windows’ storage-management layer.
- Right-click Start and select Terminal (Admin).
- Approve the User Account Control prompt.
- Run:
Get-PhysicalDisk | Select-Object FriendlyName, MediaType, BusType, HealthStatus, OperationalStatus, SizeTypical healthy output includes HealthStatus set to Healthy and OperationalStatus set to OK.
The command can also help distinguish NVMe and SATA devices through BusType, although some storage controllers, RAID configurations, USB enclosures, and virtualized systems may hide or change the information Windows receives.
Do not read Healthy as a guarantee. Get-PhysicalDisk lists physical disks visible through available storage-management providers, so its result is limited by what the drive and controller report to Windows. It does not display every vendor-specific SMART attribute.
For a more compact status check, run:
Get-PhysicalDisk | Format-Table FriendlyName, HealthStatus, OperationalStatus -AutoSizeUse SMART data when Windows does not show enough
SMART stands for Self-Monitoring, Analysis and Reporting Technology. A manufacturer utility or reputable SMART reader can expose information that Windows Settings leaves out, including:
- Drive model, serial number, and firmware version
- Power-on hours and unsafe shutdowns
- Total host reads and writes
- Percentage used or remaining life
- Media and data-integrity errors
- Reallocated or retired blocks, depending on the drive
- Temperature history or current temperature
Use the SSD manufacturer’s utility first when one is available because it can interpret the vendor’s attributes, run supported diagnostics, and identify firmware updates. Download it from the manufacturer’s official website rather than a third-party download portal.
A general SMART reader is useful for drives without a dedicated utility or when comparing several installed drives. Interpret the individual attributes using documentation for the exact model. Raw values are not standardized enough to assume that the same number has the same meaning on every SSD.
What to do with each result
| Result | Meaning | Appropriate action |
|---|---|---|
| No warnings and normal SMART data | No current failure signal is being reported | Keep normal backups and check again if symptoms appear |
| Drive health section is missing | Often a SATA drive or unsupported reporting path | Identify the model and use its manufacturer utility or a SMART reader |
PowerShell says Unknown or shows incomplete fields | Windows is not receiving complete data through the controller | Check with the vendor utility; account for RAID or USB enclosure limitations |
| Critical warning or degraded reliability | Windows has received a serious health signal | Back up immediately, run the vendor diagnostic, and plan replacement |
| Drive is read-only | The SSD may have entered a protective failure state | Copy accessible files immediately and replace the drive |
| High wear but no other warnings | A large part of rated endurance may be consumed | Increase backup frequency and compare the reading with the drive’s rated endurance |
| Healthy status but slow performance | Health and speed are separate | Check free space, temperature, firmware, drivers, background activity, and interface speed |
Signs that need immediate attention
One slow startup does not prove SSD failure. A pattern of storage-specific symptoms is more concerning:
- Windows repeatedly reports a critical storage warning.
- Files become corrupted or cannot be read.
- The drive intermittently disappears from Disk Management or the UEFI firmware.
- The SSD unexpectedly becomes read-only.
- SMART or the manufacturer diagnostic reports media errors or failure.
- Windows freezes during disk access and other causes have been excluded.
- The system records repeated storage-controller or disk errors around the time of freezes.
Boot failures can also come from damaged boot files, an incorrect boot configuration, cabling, firmware, or memory problems. The checks in Windows 11 error 0xC0000185 help separate a boot-access problem from an SSD health warning.
Why a healthy SSD can still feel slow
An SSD can report healthy and still perform badly because of:
- Very little free space
- Thermal throttling
- A slow SATA port or USB enclosure
- Outdated storage or chipset drivers
- Background updates, indexing, antivirus scans, or file synchronization
- Firmware problems
- File-system errors
- Power-saving behavior
- A workload that exceeds the drive’s sustained write capability
Check Settings > System > Storage for available capacity and Task Manager’s Processes tab for applications generating heavy disk activity. Do not replace the SSD based only on a temporary 100% active-time reading.
Similarly, do not manually defragment an SSD as though it were a mechanical hard drive. Windows’ Optimize Drives tool recognizes the media type and performs the appropriate maintenance, including TRIM where supported.
Common SSD-health mistakes
Treating one health percentage as a countdown
Remaining-life values estimate endurance consumption. They do not predict sudden electronics, controller, firmware, or power-related failures.
Assuming formatting repairs worn flash
Formatting may resolve some file-system problems, but it cannot reverse NAND wear or repair a failing controller. Secure important files before formatting any suspect drive.
Trusting only one tool
Windows Settings, PowerShell, and SMART utilities do not necessarily receive or interpret the same data. Confirm an unexpected warning with the manufacturer’s tool after backing up the drive.
Running unnecessary write-heavy tests
Repeated benchmarks add writes and may not answer whether the drive is healthy. Use a diagnostic designed for the SSD when investigating failure, and benchmark only when the question is performance.
Waiting for a warning before making backups
An SSD can fail without a useful advance warning. Keep at least one separate copy of important files even when every health check says the drive is healthy.
A practical SSD health-check routine
For a routine check, I recommend this order:
- Open Drive health in Windows Settings when the option is available.
- Run
Get-PhysicalDiskand confirm the drive Windows is reporting. - Use the manufacturer’s utility for detailed SMART data and diagnostics.
- Back up immediately before troubleshooting any critical warning.
- Investigate speed separately when health results are normal.
You do not need to check a healthy SSD every day. Check when Windows displays a warning, storage-related symptoms appear, the drive is approaching its rated endurance, or you are assessing an older computer. For another built-in hardware check, see how to check RAM speed in Windows 11.
A clean health report is useful evidence, but the backup remains the protection. Windows can tell you what the SSD currently reports; it cannot promise that the device will still be available tomorrow.
