Copy a file without using the windows file cache

Question

Anybody know of a way to copy a file from path A to path B and suppressing the Windows file system cache?
Typical use is copying a large file from a USB drive, or server

Answer 1

I am not sure if this helps, but take a look at Increased Performance Using FILE_FLAG_SEQUENTIAL_SCAN.

SUMMARY

There is a flag for CreateFile() called FILE_FLAG_SEQUENTIAL_SCAN which will direct the Cache Manager to access the file sequentially.

Anyone reading potentially large files with sequential access can specify this flag for increased performance. This flag is useful if you are reading files that are "mostly" sequential, but you occasionally skip over small ranges of bytes.