: Purchase or download your licensed copy directly from the Gibson Research Corporation (GRC) website.
Verify that your system supports legacy booting (SpinRite 6.1 does not natively run on UEFI-only machines without CSM). spinrite 6.1 download
SpinRite is an "operating system independent" tool, meaning it runs outside of Windows, Linux, or macOS. GRC | Hard drive data recovery software : Purchase or download your licensed copy directly