While investigating the file size limitations of Live Mesh, I came across this utility as a means of quickly creating files of specified sizes. FSUTIL is an administrative tool that can be used for managing files, mounting and dismounting volumes, and other file and disk related tasks on Windows XP and later.
To create a new file that is 100 MB, we have this command.
A quick and easy way to generate files of various sizes.
Back to my original investigation, Live Mesh, while it says it supports files of up to 2 GB, the actual uploading of movies (avi, wmv, mpg) greater than 50 MB appear to timeout. I was hoping to share video with family and friends. Hopefully there will be a resolution in the near future.
Read more on FSUTIL.
FSUTIL.exe (Win XP/2003 server)
FSUTIL on TechNet