Explorer doesn't refresh

After successful installation of XP, I tried to install some applications. One particular app require more than one cd.
After loading the first cd, I was prompted to insert disk 2. When that was inserted, XP insisted that disk 1 was still in.

No matter what I tried (disconnecting cd and connecting), I could not get XP to recognize that a new disk was in.

Any suggestions?

 

Now after upgrading to beta 3, I can't even eject the cd from the drive unless I close Parallel.