I have successfully installed Linux Mint and Ubuntu (dual boot) with my current USB before, with the help of Rufus.
However, I can't now. It opens the GNU GRUB terminal. What am I missing? (I am not an experienced Linux/Ubuntu user)
I had Linux Mint installed on my HDD, but I needed Ubuntu for a project. So I deleted the Linux main, swap and home partition via Windows Disk Management. I then created a bootable USB with an up-to-date Ubuntu ISO.
I am now trying to install Ubuntu into some empty space on my SSD, but I can't boot from the USB. GNU GRUB is opening every time. I have tried booting it from BIOS, the laptops own boot menu (a Lenovo) and by shift+restart->USB in Windows.
What am I doing wrong? Could there be something left on the HDD that is getting in the way?