I have an app that I compile with mingw. It uses 'write' to send chunks of data to a file system in configurable sizes. I notice that a windows drag-n-drop file copy of a 100MB file completes about 3 times faster than I can write the same amount of data using my app. I have tried 2k, 4k, and 16k write sizes. Should I try even larger write sizes and/or are there some sort of ioctls or similar I can use to increase performance? Thanks, Ben -- Ben Greear <greearb@candelatech.com> Candela Technologies Inc http://www.candelatech.com