Lack of features - OS X 10.0 lacked features that were standard in Mac OS 9, such as DVD playback and CD burning.

Stability - Mac OS X 10.0 contained a lot of kernel panics, due mostly to minimal hardware support in the kernel drivers.Previous OSs by Apple were significantly more responsive. Slow response - Mac OS X 10.0's Aqua UI was very slow responding to commands given by the user.Mac OS X 10.0 was criticized for a number of reasons:

Today, all Mac OS X CDs and Mac OS X Macs come preinstalled with the full set of 15 languages and full multilingual compatibility. The brief period of multilingual unhappiness ended with the release of Mac OS X 10.1, and came to a real end for good with Mac OS X 10.2. However, it could not be upgraded to version 10.0.4 of the operating system. They also came with more languages (the full set of 15 languages), whereas the 1Z CDs came only with about eight languages and in version 10.0.x, could not actually display simplified Chinese, traditional Chinese and Korean (except for the Chinese characters present in Japanese Kanji).Ī variant of 2Z CDs began when Mac OS X 10.0.3 was released to the Asian market. Input of simplified Chinese, traditional Chinese, and Korean was only included with the 2Z CDs. The difference in the two lay in the extent of multilingual support. With Mac OS X 10.0.0 began a short era (that practically ended with Mac OS X 10.2 Jaguar's release) where Apple offered two types of installation CDs: 1Z and 2Z CDs.

Other features present in OS 9 but lacking in OS X 10.0 were eventually delivered with successive system updates. It is the visual interface theme of the Mac OS X operating system. It is a virtual address book for the Mac. The Mail application is a way to receive and send emails. The Dock was a brand new way to organize OS X's applications. Mac OS X 10.0 contained the following features: Mac OS X 10.0, and all updates in the 10.0.x series lacked in some features (notably DVD support) but was usable and stable.

Mac os 10.0 cheetah