I installed Virtual CloneDrive 220.127.116.11 on a XP machine and it works perfectly for DVD ISO files. I then tried to mount a BD ISO file. The mounting process itself went thru w/o any error. But when I tried to open the virtual drive in Explorer, a message window "Disk is not formatted" popped up showing "Windows cannot read from this disc. The disc might be currupted, or it could be using a format that is not compatibale with Windows.". The BD ISO file can be opened/extracted by Winzip and Winrar w/o any problem. Can someone tell me how to resolve the problem? Many thanks.