Windows only cares for other installations of Windows, it doesn't care about anything else. For Linux installations, you need to do all the proper preparation w

Windows only cares for other installations of Windows, it doesn't care about anything else. For Linux installations, you need to do all the proper preparation work prior to installing Windows. That being said, as I wrote in a comment[1] further down both NTLDR and Windows Boot Manager are capable of chainloading into other bootloaders, including Linux bootloaders like GRUB. [1]: https://news.ycombinator.com/item?id=35380297 https://news.ycombinator.com/item?id=35380297