Slow PC, freezing, files failing to copy — is the hard disk dying, or is something else wrong? Guessing costs people their data. This is the complete test method: SMART report, full surface scan, speed pattern, and one clear verdict at the end.
Every week someone replaces a healthy hard disk that was never the problem — and someone else keeps using a dying one until their photos are gone. The difference between the two is a proper test, done in the right order. The method below is the one from the video: listen first, read SMART, scan the whole surface, check the speed pattern, then decide. No step alone is proof. Together, they are.
👆 Example SMART readings. The drive does the counting itself — your job is only to read the raw values honestly. Zero, zero, zero is a healthy surface. Anything climbing is a dying one.
A full test starts with your ears, not software. A healthy hard disk hums quietly and spins up smoothly. Repetitive clicking, grinding, beeping, or a drive that spins up and down again and again is mechanical damage — no software test will fix it, and every extra minute of power makes recovery harder. If you hear those sounds, stop here: copy your most important files first if the drive still opens, and read the clicking-noise guide linked from the video before running any scan.
If the drive sounds normal, note the symptoms that brought you here — slow loading, freezing, files that fail to copy, Windows repairing itself at boot. The test below will tell you whether the disk explains them or not.
Download CrystalDiskInfo from its official site (crystalmark.info) and open it. It reads the drive's own self-monitoring system, called SMART — the drive has been keeping a health diary since the day it was made. Look at two things:
Be honest about what this step is: SMART is a report, not a full test. A drive can show Good and still have a weak area SMART has not noticed yet. That is why the next two steps exist.
SMART only knows about sectors the drive has already tried to use. A surface scan reads every single sector on the disk, including the forgotten corners, and shows you a map of the whole surface. Use the Error Scan tab in HD Tune, or your drive maker's own long test (SeaTools for Seagate, WD Dashboard for Western Digital).
One isolated red block on an old drive is a warning. Red blocks scattered across the map, or a scan that stalls and crawls at one spot, is a failing surface.
Run a benchmark such as CrystalDiskMark, or the benchmark tab in HD Tune, and look at the shape of the result, not just the headline number. A healthy mechanical drive gives a fairly smooth, predictable speed curve. A drive with weak or damaged areas shows sudden deep drops — it falls to near zero and struggles back — because the heads keep re-reading the same weak spots.
For a rough reference, a healthy 7200 RPM desktop drive reads around 120–200 MB/s sequentially and a 5400 RPM laptop drive around 80–120 MB/s. Age, model and how full the drive is all move these numbers, so treat them as a pattern check, not a pass mark. An SSD should be steady and flat — big dips on an SSD point at heat or a nearly full drive, a different problem.
Windows keeps a basic reliability record you can ask for without any software. Open PowerShell and run:
Get-PhysicalDisk | Select FriendlyName, MediaType, HealthStatus, OperationalStatus
Then, for the wear and temperature counters on drives that report them:
Get-PhysicalDisk | Get-StorageReliabilityCounter | Select Temperature, Wear, ReadErrorsTotal, WriteErrorsTotal
The older command wmic diskdrive get model,status still exists on many systems but is deprecated by Microsoft — use the PowerShell route. Honest limit: the reliability counter returns blank on many USB and older drives, which tells you nothing either way. This step only confirms or contradicts the SMART picture; it never replaces the surface scan.
No single number decides. Technicians combine the evidence like this:
Smart readings, surface scan aur speed test — pura method live demo ke sath video me dikhaya gaya hai, ek asal kharab disk par.
▶️ Watch Full VideoThe SMART check takes under a minute. The surface scan is the slow part — roughly 1 to 3 hours per terabyte on a mechanical drive, because it reads every sector. The speed test takes a few minutes. Plan the scan for a time when the PC can sit undisturbed.
Not definitely. Good means the drive's own counters have not crossed the maker's limits yet. Weak surface areas that SMART has not touched can still exist, which is exactly why the full method adds a surface scan and a speed test on top of the SMART report.
A physically damaged sector cannot be healed. The drive can only retire it and use a spare in its place, and the SMART counter records that permanently. Tools that promise to repair or regenerate bad sectors are hiding the report, not fixing the surface. Back up and replace.