Ubuntu 14.04 LTS 64-bit installation fail with Universal USB Installer 以隨身碟安裝失敗

前幾天公司買了一個硬碟，裝在一台原本沒有硬碟的桌機，作業系統要使用Ubuntu 14.04  LTS 64-bit，於是用了Universal USB installer，用隨身碟開機進去還沒到選安裝硬碟的畫面，對話框就變白色，看不見任何字，移動滑鼠可以讓消失的按鈕出現，但選「繼續」就出現 installation fail，試了很多次都一樣，換UNetbootin也是同樣的問題。原本以為是硬碟的問題，但拔去接別台電腦又可以正常使用，花了快二天才發現真正的原因。就是有點舊的主機板，只支援USB2.0，但用來裝Ubuntu的隨身碟是USB3.0的。換成USB2.0的隨身碟之後完全順利安裝，這真是個奇怪的bug，網路上查不到什麼相關的資訊，但有查到有人的狀況是相反的，就是拿USB2.0的隨身碟，要裝在USB3.0的主機板上，也會有問題。在此把資訊分享給大家。

A new hard disk was bought for a desktop computer in the company. I wanted to install Ubuntu 14.04 LTS 64-bit on it with Universal USB installer. After booting with the USB flash drive, the dialog became white without any word. Moving the mouse can let the dialog button show, but the dialog showed "installation fail" when clicking the "continue". Trying several times, even with UNetbootin, still getting fail. In the beginning, I thought there were some problems with the new hard disk, but it worked good in the other computer. It took me almost two days to find out the real cause. The reason getting "installation fail" was that the old desktop computer only supported the USB2.0. Yet I used USB3.0 flash drive to install the system... Changing to USB2.0 flash drive, it worked perfectly! It's a strange bug. There are few information in the internet, but I find a situation which is reverse. That is when using USB2.0 flash drive on a motherboard which only support USB3.0, it causes the same "installation fail". I hope this will help someone.