I try to start my Computer with an USB. But I can not choose to start it, as it is said in every where in the internet, I can only choose to install.
I try to start Ubuntu 14.04, currently there is 16.04 running on the computer.
Does anyone have an Idea how I can only start it? Installing is not a problem btw, but not what I want.
Give mkusb a try, you can install it to 16.04 and use it to install 14.04, Live or Persistent to a USB drive.
It is great for making bootable pendrives with persistence partition, (if desired), and a Windows/Linix accessible partition in the left over space. The pendrive can also be used to install Ubuntu, but this feature is not forced on the user.
You must first format your USB to FAT32.
You can make Gnu/Linux Live USB with UNetbootin. When its installed it requires administrative password to run. In distribution select: Ubuntu, 14.04_Live
Attention! Choose right drive (USB) for installing Live Ubuntu!
Or with the dd utility instead.
First download linux distribution you want to instal. Get the usb device name with lsblk.
In this example USB drive is sdc1 Attention! Choose right drive!
sudo unmount /dev/sdc1
sudo dd bs=4M if=/path/to/your.iso of=/dev/sdc1 && sync
When it is all finished, reboot computer.
After rebooting, boot from the USB drive. On PCs, this usually involves pressing a button such as Esc, F8 or F12 immediately after you turn on your computer. If that don't work set the primary boot drive in your BIOS settings to USB. Press Delete immediately after you turn on your computer to start the BIOS Utility.
When I start from live USB or CD/DVD looks something like this:
