通達人驛站: How to fix the error of volume and install application path when you making an OSX Yosemite El Capitan bootable installer USB

2016/05/16

How to fix the error of volume and install application path when you making an OSX Yosemite El Capitan bootable installer USB

When you creating an OSX Yosemite/El Capitan bootable installer drive from USB flash thumb drive as the orginal command, you will see below error message.

當你使用原本的命令製作 OSX Yosemite/El Capitan USB 安裝碟時，你會看到以下的錯誤訊息。

JosedeMacBook-Pro:~ sunjose$ sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia –volume /Volumes/Untitled –applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app –nointeraction
You must specify both the volume and install application path.

I found that OSX has changed the arguments usage of createinstallmedia in OSX Yosemite/El Capitan. When I use same command twice, OSX will show below arguments usage message.

我發現在 OSX Yosemite/El Capitan 已經變動了 createinstallmedia 的參數，當我第二次使用相同的命令時，OSX就直接顯示參數的使用資訊。
JosedeMacBook-Pro:~ sunjose$ sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app -nointeraction
createinstallmedia: invalid option -- o
Usage: createinstallmedia --volume --applicationpath [--force]

Arguments--volume, A path to a volume that can be unmounted and erased to create the install media.
--applicationpath, A path to copy of the OS installer application to create the bootable media from.
--nointeraction, Erase the disk pointed to by volume without prompting for confirmation.

Example: createinstallmedia --volume /Volumes/Untitled --applicationpath "/Applications/Install OS X El Capitan.app"

You just need to change the parameter usage of createinstallmedia and you’ll see a series of expect message like the following.

你只需要改變 createinstallmedia 參數的使用方式，你就可以看到一連串期望的訊息了。
JosedeMacBook-Pro:~ sunjose$ sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.
Done.
JosedeMacBook-Pro:~ sunjose$