Best Disk Diagnostic Software in 2026
Updated
In short: Hard Disk Sentinel is ranked #1 of 25 as of 4 October 2026, ahead of smartmontools and DiskMaster. The best-ranked option with a free plan is smartmontools. The lowest first paid tier on this page is BatteryMon at $21/mo.
When a drive shows warning signs, diagnostic tools can help you examine its condition and run targeted checks. Compare SMART tests, bad-sector scans, surface scans, and read/write testing to see which listed checks match your needs. Bootable media, platform support, and maximum drive size can affect whether a tool fits your system and the drive you need to inspect. Free-plan availability and paid-from pricing provide cost details to weigh alongside those capabilities. Hard Disk Sentinel, smartmontools, and DRevitalize are among the entries to consider. Use the listed criteria to compare what each tool supports before deciding which diagnostic approach suits your storage setup.
25 disk diagnostic software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
25ranked
11free plans on this page
$21/molowest paid tier
4 Oct 2026last checked
Input list Disk Diagnostic Software 25 channels on this page · 85 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromBad-sector scanRead/write testingSurface scanBootable mediaPlatformSMART tests Spec sheet Score
01 Hard Disk Sentinel Free planNoPaid from22 one-timeBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 2/8spec lines stated 7.6
02 smartmontools Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 7.5
03 DiskMaster Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 7.0
04 DRevitalize Free plannot statedPaid fromnot statedBad-sector scanYesRead/write testingYesSurface scanYesBootable mediaYesPlatformwindowsSMART testsYes 6/8spec lines stated 7.0
05 HDAT2 Free planYesPaid fromnot statedBad-sector scanYesRead/write testingYesSurface scannot statedBootable mediaYesPlatformdosSMART testsYes 6/8spec lines stated 7.0
06 HDD Regenerator Free planNoPaid from49.99 one-timeBad-sector scanYesRead/write testingnot statedSurface scanYesBootable mediaYesPlatformwindowsSMART testsYes 7/8spec lines stated 7.0
07 nvm Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 7.0
08 MHDD Free planYesPaid fromnot statedBad-sector scanYesRead/write testingYesSurface scanYesBootable mediaYesPlatformdosSMART testsYes 7/8spec lines stated 6.9
09 Active@ Hard Disk Monitor Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 6.8
10 Victoria HDD/SSD Free planYesPaid fromnot statedBad-sector scanYesRead/write testingYesSurface scanYesBootable mediaNoPlatformwindowsSMART testsYes 7/8spec lines stated 6.8
11 Ariolic Disk Scanner Free planYesPaid fromnot statedBad-sector scanYesRead/write testingNoSurface scanYesBootable medianot statedPlatformwindowsSMART testsnot stated 5/8spec lines stated 6.7
12 STB Suite Free planNoPaid fromnot statedBad-sector scanYesRead/write testingYesSurface scanYesBootable medianot statedPlatformnot statedSMART testsYes 5/8spec lines stated 6.7
13 BatteryMon Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 6.4
14 SpinRite Free planNoPaid from89 one-timeBad-sector scanYesRead/write testingYesSurface scanYesBootable mediaYesPlatformdosSMART testsYes 8/8spec lines stated 6.4
15 Atola Disk Recycler Free planNoPaid fromnot statedBad-sector scanYesRead/write testingYesSurface scanYesBootable medianot statedPlatformwindowsSMART testsYes 6/8spec lines stated 6.3
16 HD Tune Pro Free planNoPaid from29.95 one-timeBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 2/8spec lines stated 5.9
17 CrystalDiskMark Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 5.8
18 Macrorit Disk Scanner Free planYesPaid fromnot statedBad-sector scanYesRead/write testingnot statedSurface scanYesBootable medianot statedPlatformwindowsSMART testsnot stated 4/8spec lines stated 5.8
19 ValiDrive Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingYesSurface scannot statedBootable medianot statedPlatformwindowsSMART testsnot stated 3/8spec lines stated 5.7
20 GSmartControl Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 5.6
21 SMARTHDD Free planNoPaid from14.95 one-timeBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformwindowsSMART testsYes 4/8spec lines stated 5.5
22 Stellar Drive Monitor Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 5.4
23 DriveDx Free planNoPaid from24.99 one-timeBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 2/8spec lines stated 5.3
24 StableBit Scanner Free planNoPaid from29.95 one-timeBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 2/8spec lines stated 5.3
25 HDDScan Free planYesPaid fromnot statedBad-sector scannot statedRead/write testingnot statedSurface scannot statedBootable medianot statedPlatformnot statedSMART testsnot stated 1/8spec lines stated 5.2
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Bad-sector scan | Read/write testing |
|---|---|---|---|---|---|---|---|---|
| 1 | Hard Disk Sentinel | 7.6 | Free plan | Free | No | 22 one-time | — | — |
| 2 | smartmontools | 7.5 | Free plan | Free | Yes | — | — | — |
| 3 | DiskMaster | 7.0 | Free plan | Free | Yes | — | — | — |
| 4 | DRevitalize | 7.0 | Free plan | Free | — | — | Yes | Yes |
| 5 | HDAT2 | 7.0 | Free plan | Free | Yes | — | Yes | Yes |
| 6 | HDD Regenerator | 7.0 | No | — | No | 49.99 one-time | Yes | — |
| 7 | nvm | 7.0 | Free plan | Free | Yes | — | — | — |
| 8 | MHDD | 6.9 | Free plan | Free | Yes | — | Yes | Yes |
| 9 | Active@ Hard Disk Monitor | 6.8 | Free plan | Free | Yes | — | — | — |
| 10 | Victoria HDD/SSD | 6.8 | Free plan | Free | Yes | — | Yes | Yes |
| 11 | Ariolic Disk Scanner | 6.7 | Free plan | Free | Yes | — | Yes | No |
| 12 | STB Suite | 6.7 | No | — | No | — | Yes | Yes |
| 13 | BatteryMon | 6.4 | No | $21/mo | Yes | — | — | — |
| 14 | SpinRite | 6.4 | No | — | No | 89 one-time | Yes | Yes |
| 15 | Atola Disk Recycler | 6.3 | No | — | No | — | Yes | Yes |
| 16 | HD Tune Pro | 5.9 | No | $29.95/mo | No | 29.95 one-time | — | — |
| 17 | CrystalDiskMark | 5.8 | No | — | Yes | — | — | — |
| 18 | Macrorit Disk Scanner | 5.8 | Free plan | Free | Yes | — | Yes | — |
| 19 | ValiDrive | 5.7 | No | — | Yes | — | — | Yes |
| 20 | GSmartControl | 5.6 | No | — | Yes | — | — | — |
| 21 | SMARTHDD | 5.5 | No | — | No | 14.95 one-time | — | — |
| 22 | Stellar Drive Monitor | 5.4 | No | — | Yes | — | — | — |
| 23 | DriveDx | 5.3 | No | — | No | 24.99 one-time | — | — |
| 24 | StableBit Scanner | 5.3 | No | — | No | 29.95 one-time | — | — |
| 25 | HDDScan | 5.2 | No | — | Yes | — | — | — |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which disk diagnostic software is ranked first on Specifiction?
Hard Disk Sentinel is ranked #1 of 25 with a score of 7.6. smartmontools is second and DiskMaster third.
How many of these have a free plan?
11 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, BatteryMon has the lowest first paid tier we found: $21/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.
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