Safely remove a USB drive using the Win32 API?
You can use the CM_Request_Device_Eject() function as well as some other possibilities. Consult the following projects and articles:
DevEject: Straightforward. http://www.withopf.com/tools/deveject/
A useful CodeProject article: http://www.codeproject.com/KB/system/RemoveDriveByLetter.aspx
It looks like Sync lets you specify -e to eject removable drives. While not a win32 API, you could probably just call sync -e [drive_letter]
from your makefile.