I used me Toshiba Satellite to download Tails then used Rufus to install it a USB. I adjusted the BIOS to allow usb boot. Booted it up made a persistent volume on a second USB drive. I ejected the second and shut off computer. Now no matter what I do it only 'no bootable disk. Please insert disk and press any button'. F1 F2 and F12 all do nothing just repeats that phrase.