Hm! Sometimes dual boot could be difficult to achieve. Mostly because of the BIOS/EFI. The last one I've seen was some HP laptop. It showed two SSD's as one. This was the least trouble.
Try Linux Mint. Look at the site and pick one. They have a few images with preconfigured desktop managers. It's more stable than Ubuntu and in the last few years became even more popular.
Currently, I am typing here from Arch which is really a good one. You can put it on the USB and it can behave as a real OS, not like LIVE USB. If you want. I like it because you can install what you want starting with a bare minimum.
Try Linux Mint. Look at the site and pick one. They have a few images with preconfigured desktop managers. It's more stable than Ubuntu and in the last few years became even more popular.
Currently, I am typing here from Arch which is really a good one. You can put it on the USB and it can behave as a real OS, not like LIVE USB. If you want. I like it because you can install what you want starting with a bare minimum.