fsutil file createnew D:\testfile_50GB.bin 53687091200 50 GB = 50 × 1024³ bytes = Or use PowerShell:
Creating a full "50 GB test file" is not about writing text content (that would be billions of pages), but about for testing purposes (e.g., network speed, storage limits, or application behavior). 50 gb test file
yes "This is a 50 GB test file line." | head -c 50G > testfile_50GB.txt But that is impractical and rarely useful for technical testing. fsutil file createnew D:\testfile_50GB