I am running Lubuntu 18.1 but have been experimenting with Tiny Core Linux. After running Tiny Core, I tried to boot Lubuntu as normal, but the machine tells me that there is no OS installed.
I tried to run Boot Repair (see above pastebin) but it said I needed to run it in UEFI rather than legacy mode. I went into the BIOS and switched off legacy mode, but after doing that I cannot boot from a USB.
What else should I try? Will I have to reinstall Lubuntu?