—he watched the white text scroll like ancient runes. "Erasing Disk: 0%... 10%... 100%."

Safety Warning: Always verify the SHA256 or MD5 checksum of any operating system image downloaded from a third-party source to ensure it has not been injected with malware. How to Flash a macOS High Sierra RAW Image to USB

If you're looking for a raw download of macOS High Sierra 10.13.6, I recommend checking Apple's official support website or reputable sources that provide verified downloads.

Stay safe, and keep that classic Mac running.

For a "raw" experience, you can download the back-end PKG files directly from Apple's servers and trick your Mac into processing them: