image image image image image image image

# Target file size in bytes (2 Gigabytes) target_size = 2 * 1024 * 1024 * 1024 file_name = "2gb_sample.txt"

$file = New-Object System.IO.FileStream "C:\temp\2GB-real.bin", Create, ReadWrite $file.SetLength(2GB) $file.Close()

Several reputable sites provide these files for free to help with testing:

If your goal is to "prepare" the file for someone else, you can use these free transfer services: How to Create a Dummy Test File of Any Size in Windows