Hard Disk Sentinel vs HDAT2
Hard Disk Sentinel
hdsentinel.comHDAT2
hdat2.comSide by side
| Figure | Hard Disk Sentinel | HDAT2 |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Windows | Yes | Yes |
| Linux | Yes | — |
| Plans published | 7 | 1 |
| Spec score · Hardware Diagnostic Software | 8.3 (#3) | 7.7 (#8) |
| Spec score · Disk Diagnostic Software | 8.2 (#6) | 7.7 (#13) |
| Purpose | Hard Disk Sentinel monitors, diagnoses, tests, and reports on hard disk and SSD health, performance degradation, and failures. | HDAT2 tests and diagnoses ATA, ATAPI, SATA, NVMe, SSD and SCSI/USB devices. |
Plans
Hard Disk Sentinel
- DOSFree
- LinuxFree
- TrialFree
- Standard$22, paid once
- Professional$33, paid once
- Professional Family$59, paid once
- Enterprise$219.50, paid once
In their own words
Hard Disk Sentinel
Hard Disk Sentinel has no write-up on Specifiction yet; its figures are above.
HDAT2
HDAT2 is a drive-testing and diagnostic program for ATA, ATAPI, SATA, NVMe, SSD, and SCSI/USB devices. Its device-level tools test drives and can repair bad sectors on detected devices. File-system testing covers MBR/GPT, boot data, and directories on FAT12/16/32, exFAT, and NTFS. SMART functions are available for ATA/SATA, SCSI, and NVMe drives. Capacity controls include SET MAX and Device Configuration Overlay, with options to restore full capacity; supported SATA and NVMe devices can also be switched between 512e logical sectors and 4Kn. HDAT2 detects devices on AHCI and some RAID controllers, and USB devices through USB ASPI or BIOS when supported. The main program requires a real DOS system booted from USB, floppy disk, or CD/DVD. A Windows 32/64-bit demo is available, but it operates only at drive level, omits file-level functions, and aborts almost all commands while simulating conflicts. The freeware plan is free, for one or more machines, with redistribution without profit; it is provided as-is without warranty.