That's going to be specific to each distro whether it's possible or not. It's usually hidden in advanced partitioning, if available at all. It's like every new distro has to be completely turnkey to appeal to gamers.
I don't get why GRUB is so popular, GRUB 2 is so incredibly bloated and convoluted when it really doesn't need to be, and it's not even nice like rEFInd and other graphical bootloaders. When they started shipping GRUB 2 by default I switched to syslinux, then systemd-boot/efistub.
Same. GRUB might offer wider compatibility and support legacy BIOS, but it's a cantankerous, wheezy dinosaur compared to systemd-boot. I don't know why more distros don't at least offer the latter as an option during installation.
GRUB 2 is so incredibly bloated and convoluted when it really doesn't need to be
Heh. Because back when LILO was the standard bootloader people wanted something modern that could boot off everything and could support new tech indefinitely. And then it kind of got out of hand. Ironically, Grub still can't boot into a generic ISO without loading all of it in RAM.
Grub is the systemd of bootloaders... it's large and complex and can do anything but occasionally someone will say "I don't need it to do everything, how about something smaller that only does this and this".