ExtenDOS Pro provides support for industry-standard CD-ROM formats. You can access any ISO9660 or High Sierra format CD-ROM as if it were a removable hard disk, switch between supported disk formats without a reboot, and access files of any size. ExtenDOS Pro even provides a built-in configurable cache facility to speed up data access. And with the right drive, ExtenDOS Pro supports single-session or multisession photoCD as well.