HDAT2
HDAT2: A free bootable toolkit for low-level storage testing, repair, and inspection. Ranked #7 of 26 in Disk Diagnostic Software by our editors (8.1/10); pricing: Free plan; best for bootable low-level device diagnostics.
At a glance
- Editor score8.1 / 10
- PricingFree plan
- Best forBootable low-level device diagnostics
- Free planYes
- Paid fromFree
- PlatformDos
- Facts checked20 Sep 2026
Where it wins
- Tests and repairs bad sectors across many storage device types
- Includes SMART, read/write/compare, filesystem, and sector tests
- Boots from ISO, IMG, or USB-compatible media without a paid plan
Where it doesn't
- The main program requires real DOS and boot media
- Windows downloads are demo versions rather than the main program
- Some SMART functions depend on compatible ATA, SATA, SCSI, or NVMe drives
Our verdict on HDAT2
HDAT2 is a freeware disk-testing and diagnostic utility for users who need low-level storage-device inspection from bootable media. It supports ATA, ATAPI, SATA, NVMe, SSD, SCSI, and USB devices, with functions for bad-sector testing and repair, device information, sector viewing, and SMART operations. File-system testing covers FAT12, FAT16, FAT32, exFAT, and NTFS, making it relevant for troubleshooting both storage hardware and supported file systems.
The product’s strongest fit is its breadth of diagnostic operations in a bootable environment. Read, write, and compare testing can examine device behavior, while bad-sector functions address a specific repair-oriented need. Device Configuration Overlay operations add another low-level option for supported hardware. Distribution through ISO, IMG, and USB-compatible files supports several boot-media workflows, including USB drives, floppy disks, and CD/DVDs. HDAT2 is a practical choice when diagnostics need to run outside a normal desktop operating system.
The main trade-off is the operating environment. The primary program runs from real DOS boot media, so it is less convenient for users who prefer a modern Windows interface or continuous desktop monitoring. Windows downloads are demo versions, while the full workflow centers on bootable DOS media. Choose HDAT2 for free, bootable diagnostics that cover bad sectors, SMART, file systems, sectors, and multiple device families. Choose another tool if a Windows-native experience or simpler onboarding is more important than low-level testing coverage.
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HDAT2 pricing
HDAT2 fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Bad-sector scan | Yes |
| Read/write testing | Yes |
| Surface scan | Not verified |
| Bootable media | Yes |
| Platform | Dos |
| SMART tests | Yes |
| Maximum drive size | Not verified |
| Deployment | Desktop |
| Platforms | Windows |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | hdat2.com |
| Facts checked | 20 Sep 2026 |
Alternatives to HDAT2
- DiskMasterA free, open-source diagnostic suite for monitoring and investigating drive health.9.4
- Hard Disk SentinelA broad disk-monitoring suite with free access and paid features for deeper diagnostics and management.9.2
- smartmontoolsA free, cross-platform SMART toolkit for technically proficient administrators.9.0
HDAT2 vs the competition
- HDAT2 vs DiskMaster
- HDAT2 vs Hard Disk Sentinel
- HDAT2 vs smartmontools
- HDAT2 vs GSmartControl
- HDAT2 vs Victoria HDD/SSD
- HDAT2 vs StableBit Scanner
Compare HDAT2 with any tool side by side →
Also Ranked In
HDAT2 is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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