如何制作 ubuntu U盘启动盘

一，在ubuntu下制作

Insert a USB stick with at least 2GB of free space
Open the dash and search for Startup Disk Creator
Select the Startup Disk Creator to launch the app
Click 'Other' to choose the downloaded ISO file if it isn’t found automatically, select the file and click 'Open'
Select the USB stick in the bottom box and click 'Make Startup Disk' and then 'Yes'
That's it! When the process completes, you'll be ready to restart your computer and begin installing Ubuntu

不过我在ubuntu下制作不成功。

二，在windows下制作

0,你需要先下载 usb安装器网址https://rufus.akeo.ie/

Open Rufus and select your USB stick in the 'Device' dropdown
Click the CD Rom icon next to the 'FreeDOS' dropdown, then find your downloaded Ubuntu ISO and click 'Open' and then 'Start'
Click 'Yes' when it asks to download Syslinux software
Click 'OK' to write in ISO Image mode
Confirm that your USB stick is selected and then 'OK' to continue
When it is finished, just restart your computer and start using Ubuntu, or you can install Ubuntu

未在windows下测试。

三，在MAC OS下制作

0,你首先需要下载 usb安装器，网址http://unetbootin.github.io/

Download the 64-bit Ubuntu Desktop ISO
Launch UNetbootin and allow the osascript to make changes
Select the ‘Diskimage’ radio button and then click the '...’ button
Select the Ubuntu ISO file you downloaded and click 'Open'
Then select your flash drive in the bottom row and click 'OK'
Tip: If you are unsure which one is your flash drive, in a terminal you can type
```
diskutil list
```
with the drive not inserted and then inserted to see which one it is.
After UNetbootin finishes, click ‘Exit’ and restart your Mac
Press alt/option key while the Mac is restarting to choose the USB stick to try or install Ubuntu在mac下测试成功。