I did a partial reinstall of Fedora 30 on my XPS13 as I completely failed at migrating it to UEFI from legacy.
Such a weird problem - after a bios update only half the RAM was visible to the OS in legacy mode. I tested with various liveCDs and figured out it was fine in EFI mode so decided to switch it over.
I might have gone with EFI boot in the very beginning but this laptop started life as an Arch install and I couldn't be arsed with all the UEFI malarky so it's my own damn fault.