Does anyone know how to flush the disk write cache data from the cache manager for the current directory (or any given file or directory, for that matter), from a Windows command line?
I found the SysInternals Sync worked well for me - although it flushes ALL cache, not just for the specific folder.
Example of usage:
IF EXIST Output RD /S /Q Output && Sync && MD Output
By default it flushes all cached data for all drives - you can specify command-line options to restrict which drives but you cannot restrict it to just specific folders.
Without it I would often get Access denied errors because the MD was trying to create a new folder while the system was still in the process of deleting the old one.
来源：https://stackoverflow.com/questions/85595/flush-disk-write-cache-from-windows-cli