CorvusRuber SoKnight You know that practically all of the user configs are inside your home directory, right ? Backup that and you're done.
SoKnight Oh, okey.. I try install Solus on UEFI for support GPT. I will can install grub in UEFI for Solus? And will I be able to run Windows bootloader from grub menu entry?
kyrios SoKnight Solus does only support Grub with BIOS/MBR systems. systemd-boot is used with EFI/GPT systems. Just stick to what is supported unless you have advanced skills and thus know how to handle this and fix your system when it will break.