[digg-me]Italiano: non è una lista completa (né facile da procurarsi) ma ecco qui lo spazio necessario in fase d’installazione di numerose versioni di Mac OS X, reperite dalla fonte ufficiale, Apple.
English: altough patchy and incomplete, straight from Apple’s website and knowledge base, here is the required space for installing various versions of Mac OS X
Da leggere prima di installare Mac OS X (10.0 nda)
almeno 1.5 GB di spazio disco disponibile
(translation: at least 1.5 GB of available space)
Url: PDF in italian downloaded from http://docs.info.apple.com/article.html?artnum=50071
Mac OS X 10.2 – Read Before You Install
The amount of disk space required depends on your computer and the way you are installing Mac OS X. If you see a message that you do not have enough disk space to install Mac OS X, you can deselect items to save space.
Url: PDF downloaded from http://docs.info.apple.com/article.html?artnum=51764
Requirements for Mac OS X 10.3
At least 1.5 GB free hard disk space.
Note: For Mac OS X 10.2 or later, 3.0 GB is the recommended minimum. The exact amount required depends on your computer and how you install Mac OS X (default versus custom installation, for example).
Url: http://support.apple.com/kb/HT2176
Mac OS X 10.4 Tiger system requirements
At least 3 GB of free disk space; 4 GB if you install the XCode 2 Developer Tools
Url: http://support.apple.com/kb/HT1514
Apple – Mac OS X Leopard (10.5 nda) – Technical Specs
9 GB of available disk space
[…] Developer tools require 1GB of memory and an additional 3GB of available disk space
Url: http://www.apple.com/macosx/techspecs/
Mac OS X Server 10.0 to 10.3: System Requirements
Hard disk space
4 GB
Url: http://docs.info.apple.com/article.html?artnum=107685