Soopyyy Yes, this is a laptop, but like i said, a year ago, i used my computer exactly like that but just with Solus MATE, and i had no Linux Boot Manager entry getting deleted. I did have to recreate it once with efibootmgr, but that was it, it stayed there without any issues (CSM was turned on back then). I expected it to work the same way this time too, but surprisingly it didn't.