It seems that this new installation is the only operating system on this computer. If so, it should be safe to install the GRUB boot loader to your primary drive (UEFI partition/boot record).
Asebdad amaynut yettban d netta kan i d anagraw n wammud i yellan deg uselkim-a. Ma yella d tidet waya, ilaq ad yettusebded usebdad n usenkar n GRUB s ttawil ɣef umeɣri-inek·inem agejdan (aḥric UEFI/asekles n usenker).