Missing operating system

[mwachala.bakari1359]

I chose the option of restarting my laptop to a usb drive but on powering on, messagr appearing is Missing operating system.
I have another pc with a working os.
What can i do?

 

[USAFRet]

I chose the option of restarting my laptop to a usb drive but on powering on, messagr appearing is Missing operating system.
I have another pc with a working os.
What can i do?

Going back to the beginning...why are you doing this?