Topic: ISO9660 + Joliet

I can not understand, how to me to install correspondence between file descriptors from Joliet SVD and file descriptors from PVD. Decided to give the chance, for example, I to the user to delete a file from iso a file. Names of files I display but a basis of a tree from Joliet SVD, and accordingly I can find the necessary descriptor in Joliet SVD. But what to delete from PVD?