Pseudo files

NTFSD
1

Does anyone have any suggestions for simulating files of huge size for
testing? I want to test my filter and user mode apps with files larger than
300GB , but I don’t have the disk space to do it. I’m thinking it would be
easier to be able to simulate files that large and larger, say up to 1TB.

Thanks,
Jeremy

2

Jeremy,

You might be able to use sparse files for testing. I’m not sure what affects sparse files would have on a FS filter, but you can give it a shot. Here’s some basic info on sparse files:

http://www.pcguide.com/ref/hdd/file/ntfs/otherSparse-c.html

You can set the “sparse” attribute with the fsutil command line utility. Hopefully that works for you.

-Bill