Each Windows 10 release modifies the bootloader.
Each Windows 10 release modifies the bootloader.
The Grub bootloader becomes unstable after each Windows update due to changes in the installation process. Each cycle restarts the setup sequence, but the updates keep overwriting or interfering with the boot configuration. This leads to the same frustrating pattern of reboots, failed boot attempts, and a complete loss of Grub functionality.
I believe Windows treats other operating systems as invalid partitions, interpreting the GRUB bootloader as corrupted and attempting fixes without success. This mirrors the situation when a USB device uses a format other than NTFS or FAT, leading Windows to mark it as damaged and request a new format. Please let me know if this is correct.
I haven't encountered this before. You mention choosing Linux in the BIOS, which seems to make Windows choose itself as the first boot option. That explanation makes sense based on what I understand.
I experienced a similar situation once, required to enter the Linux partition and reinstall GRUB. The process didn’t involve any BIOS modifications.
I've experienced this before too; eventually I decided to go with a separate drive, even though it still "fixed" Grub once afterward, which was frustrating. When UEFI-aware Nix installs appear in the BIOS, it makes things easier without needing to liveload to reinstall Grub, but it remains irritating—like a persistent virus.
I wonder if the operating system isn't fully connected to the boot loader—it feels concerning.
Uncertain if this matches exactly, but I've been using Windows 7 and 10 on different partitions of the same SSD for years without any problems. I've reinstalled Windows 10 several times during that period, and the older OS remains functional while its bootability stays consistent. Both systems start up correctly, and I can choose the primary operating system from either one, which works as intended. I initially installed Windows 7 on its own partition before adding Windows 10. The bootloaders appear to coexist without issues.