Hi Lino,

Well I did not have any problems with my DVD drives, my floppy drive however
caused an error message to be displayed:

import java.io.File;

public class ListRoots {
   public static void main(String[] args) {
       File[] roots = File.listRoots();
       File[] ignoreRoots = new File[] { new File("a:\\") };
       listRoots: for (File file : roots) {
           for (File ignoreRoot : ignoreRoots) {
               if (file.equals(ignoreRoot)) {
                   System.out.println("[ignored]" + file);
                   continue listRoots;
               }
           }
           System.out.println((!file.canRead() ? "[not available]" : "") +
file);
       }
   }
}

Running the code above on a Windows XP gave:
[ignored]A:\
C:\
D:\
[not available]E:\
[not available]F:\
[not available]Z:\

So maybe a workaround would be to ignore the floppy drive as the code above
does - which roots to ignore could be configurable in your application.

Cheers,
Martin.