Users that dual/triple boot are terrified that after a security update, their alternative systems wont boot. On my MacBookPro back in 2018/2019, an Win10 update

Users that dual/triple boot are terrified that after a security update, their alternative systems wont boot. On my MacBookPro back in 2018/2019, an Win10 update prevented Win10 EFI BootManager from loading Win10 if it was installed on the 4th partition. Its sad how fragile their systems are after all these years.