That would mean that there is no valid OS on your flash drive. What and how did you you install OS X onto the flash drive? What version of OS X are you using? Those Apple cables may only be useful for data transfers. You would be better off using an external small dock or a USB adapter for USB female to USB-C male. You will find them on Amazon.
Hi Kappy
Thanks. I use the Apple
USB female to USB-C male Adapter and want to run the OS Tails which supposedly can be run from a Mac. I have it installed on the USB stick according to the soecs provided.
I don't know what that is. If it's just an application then copy it into the Applications folder. If it's an installer then you can run it from the USB flash drive after you boot the computer normally. You cannot boot from the flash drive because there is OS on the flash drive.
Thanks Kappy
It's an OS and need to be able to select the USB stick as the start disk but it does it appear at startup when I simultaneously press the Option button. So the question is whether the MacBook is able to recognize the OS on the USB at all.
OK. Checked it out and that is a Linux variant. You will need a Live distro of it in the form of an ISO image. Then you will need unetbootin for Mac or Mac Linux USB Loader in order to put it onto the flash drive in a form that will boot the Mac. You cannot boot it from the ISO image.
I know that I cannot start up from an ISO image.
I used Terminal to install the ISO image on the USB stick with the command
dd if=/Users/mymacbook/Desktop/tails-i386-2.11.iso of=/dev/rdisk2s1 bs=16m && sync
The OS installed without an issue but when I start the MacBook it doesn't recognize the bootable stick
Get one of those free utilities to do the installation on the flash drive. Be sure you partition the flash drive using MBR and format using MSDOS (FAT32). I've had mixed results using dd.
cannot start up from usb
