Mac OS X 10.9 Mavericks 正式版官方下载与改进

和Windows 一样，以往OS X 系统的新版本升级，都需要支付少许的升级费用，但苹果宣布，自从Mavericks 起，OS X 系统的升级和下载将会完全免费，这样对推广OS X 系统和MAC 电脑一定会有好处，但对于Windows 系统每次升级收取高昂价格，会不会有所压力呢？

Looking to download OS X Mavericks DMG, ISO, or full installer? Here are the direct download links to Mavericks and the steps to create an OS X Mavericks bootable USB.

Note that at the time of writing this, Apple still hosts Mac OS X and macOS installers for download, free of charge, directly from their website...