[vetinari]

> Linux and windows will never share a drive well.

Nowadays with UEFI and GPT, sharing a drive is not a problem; they don't stomp on each other's MBR anymore and even UEFI itself comes with a boot manager.

The bigger problem is to learn about these "new" things ("new", because introduced ~15 years ago) and stop doing stupid shit that worked with legacy BIOS and is not necessary anymore. Grub breaking itself randomly is mostly self-inflicted problem.