when you face ""installer error trying to locate volume at"

https://superuser.com/questions/416897/how-do-i-set-the-target-parameter-for-package-installs-in-os-x

 

I have installed some osx system use the command:

sudo installer -pkg [path] -target /Volumes/OSX

it works always, 

but today I would like to install java which the installer command, I get the error as the title. 
after google I found this article is useful, 
https://superuser.com/questions/416897/how-do-i-set-the-target-parameter-for-package-installs-in-os-x

In a world:

the pkg know where the decompress files should put, so you just need to put / behind -target parameter, the command as below:

sudo installer -pkg [path] -target /