A: The original v1.71 only supports up to 2TB natively. Some "2024 patched" versions claim 4TB support, but they often crash. Use Victoria for >2TB drives.
Once you have the legitimate hddreg.exe or hddreg2024.iso: hdd regenerator 2024 bootable iso full
After the scan finishes, HDD Regenerator will display a summary: A: The original v1
If you see "Successfully regenerated: 95% or more," your drive is likely usable again. You can now reboot into Windows and run chkdsk /f just to ensure file system consistency. If you see "Successfully regenerated: 95% or more,"