How to install OS X 10.10 Yosemite beta on a separate partition
DOWNLOADOPTIONS.download1file·ISOIMAGEdownload·download1file·ITEMTILEdownload·download1file·PNGdownload·download1file.,下載安裝檔:JunosPulseMACInstaller;下載完成後請直接點選打開安裝檔;點選JunosPulse.pkg開始安裝;點選安裝按鈕;安裝程式需要輸入您的電...。參考影片的文章的如下:

![Mac OS X Yosemite (10.10) Full In-Depth Walkthrough [PART 1]](https://i.ytimg.com/vi/aggT2nxqAwA/hqdefault.jpg)