ADDITIONAL SYSTEM INFORMATION :
os : windows 7/10 64-bit
Java Runtime : jdk1.8.0_291

A DESCRIPTION OF THE PROBLEM :
The Files.getFileStore implementation on Windows get error when directory on a direct-io ramdisk drive ,
 WindowsNativeDispatcher.GetVolumePathName occur some error


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.download windows tool "Primo Ramdisk Multiple Editions" , you can find here https://www.romexsoftware.com/en-us/primo-ramdisk/download.html
2.install Primo.Ramdisk.Setup , Free Trial
3.after installed , click "Create a new disk" , set Disk Size =32/64 or 128 MB , driver Letter = X , type must be "Direct-IO Disk" , click "Create"
4.run Code get error


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
no error ，System.out.println like below
true
148058927104

ACTUAL -
true
java.nio.file.FileSystemException: x:: Incorrect function.
        at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:86)
        at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97)
        at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102)
        at sun.nio.fs.WindowsLinkSupport.getFinalPath(WindowsLinkSupport.java:82)
        at sun.nio.fs.WindowsFileStore.create(WindowsFileStore.java:94)
        at sun.nio.fs.WindowsFileSystemProvider.getFileStore(WindowsFileSystemProvider.java:482)
        at java.nio.file.Files.getFileStore(Files.java:1461)
        at test.Test.main(Test2.java:13)


---------- BEGIN SOURCE ----------
import java.io.IOException;
import java.nio.file.FileStore;
import java.nio.file.Files;
import java.nio.file.Paths;

public class Test {
    public static void main(String[] args) {
        try {
            String p="x:";
            System.out.println(Files.exists(Paths.get(p)));
            FileStore fileStore = Files.getFileStore(Paths.get(p));
            System.out.println(fileStore.getTotalSpace());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
---------- END SOURCE ----------

FREQUENCY : always