Literally the only boot drive issue I’ve ever had dual booting was when I somehow accidentally deleted the GRUB partition (I’m still not entirely sure how)
Grub lives on the drive with Linux, windows on an extra one, select which I wanna use on boot. Windows just updated like yesterday, rebooted right to GRUB no issue








It was me, I know that, and I know I did it while in Linux, too, I just did like 50 things at once and about 20 of them could be responsible