For use outside of Windows, you may need to disable Secure Boot in your BIOS/UEFI settings if using older bootloaders.

The "Professional" edition in the v4.3.6 release was positioned at the mid-to-high tier, below the "Technicians Edition" but far above the free "Standard" or "Personal" versions. Here’s what it offered at its peak:

Though the version is over a decade old, several niche scenarios still demand this specific build:

Download HDClone (free) for Windows, macOS and Linux - Gizmodo

Automatically adjusts file systems when cloning between disks with different sector sizes (512, 512e, 1Kn, or 4Kn).