Sparse NTFS

https://forum.ixbt.com/topic.cgi?id=22:62757

https://web.archive.org/web/20070318004154/http://www.flexhex.com/docs/articles/sparse-files.phtml

https://web.archive.org/web/20071017042555/http://flexhex.com/docs/articles/alternate-streams.phtml

Create Large File

https://stackoverflow.com/questions/982659/quickly-create-large-file-on-a-windows-system

fsutil file createnew sparse-file 350000000

fsutil sparse setflag sparse-file

fsutil sparse setrange sparse-file 0 350000000

fsutil file layout sparse-file

del data.txt

ren sparse-file data.txt