If all of your operating systems are listed above, then it should be safe to install the boot loader to your primary drive (UEFI partition/boot record). When your computer boots, you will be able to choose to load one of these operating systems or the newly installed Debian system.
ሁሉም ገዢ ስልቶች ከላይ ካለው ዝርዝር ውስጥ ካሉ የቡት ጫኚውን በመጀመሪያው ዲስክ ውስጥ በሚገኘው በዋናው የቡት ማኅደር ውስጥ መትከል ችግር አያስከትልም ይሆናል።