HDAT2 is described as 'is program for test or diagnostics of ATA/ATAPI/SATA, SSD and SCSI/USB devices' and is an app in the OS & Utilities category. There are more than 10 alternatives to HDAT2 for a variety of platforms, including Windows, Linux, MS-DOS, Mac and PortableApps.com. The best alternative is CrystalDiskInfo, which is both free and Open Source. Other great apps like HDAT2 are HD Tune (Freemium), Victoria (Free), Hard Disk Sentinel (Paid) and HDD Regenerator (Paid).
- HDD Regenerator is a unique program for regeneration of physically damaged hard disk drives. It does not hide bad sectors, it really restores them!. View 8 alternatives to HDD Regenerator
The program is no longer updated since 2011, but it supports Windows 10 and can be still bought from the official website.
- Paid • Proprietary
HDD Regenerator vs HDAT2It is the only one that really regenerates the bad sectors of the HDD ...HDAT2 may repair the bad sectors but the drive may still be unusable. HDD Regenerator has a feature that shows slow (to read/write) sectors so you can retry or avoid the bad areas. Victoria has this feature too but I have never used Victoria to repair disks.
- MHDD is the most popular freeware program for low-level HDD diagnostics. View 22 alternatives to MHDD
Last version 4.6 was released in 2005. See http://hddguru.com/software/2005.10.02-MHDD/mhdd_changelog.en.html
- Free • Proprietary