- Jan 23, 2008
- Reaction score
- Keller, Texas
- Your Mac's Specs
- 2017 27" iMac, 10.5" iPad Pro, iPhone 7+, iPhone 8, iPhone 11, Numerous iPods, Catalina
It could also be that the publisher of the CD is using a non standard compression method to place all that info on one disc. But like member "krs" stated, the publisher may not be aware of the 64 bit requirement of Catalina. Windows 10 still runs 32 bit programs and the vast majority of computer users are running Windows. Most publishers today such as the National Geographic archive and others offer both Windows and Mac formats on the same disc.