1. Linux usually uses more than one partition so any Windows installer change may break other OSes. But the partitions for Linux do seem to survive, just no boot to Linux.
2. Microsoft always seems to replace the boot loader and more so my bet is the partitions will survive but your Linux installation will now fail to boot.
3. This is why you would make a clone of your working system and then test it on the clone copy. Any other method is the old "high wire act without a net." It can end badly.
4. Microsoft's installer will touch and later more than the NTFS partition. The Linux or non-FAT and non-NTFS partitions seem to survive. That does not mean the partitions that survived will boot and run Mint any longer.
Example priors: https://www.google.com/search?q=repair+mint+after+Windows+10+install+site:forums.linuxmint.com
I've had a good experience dual booting Win 7 and Mint, but now I'm biting the bullet and upgrading the home PC. First hardware - the existing motherboard, CPU, and RAM are eight years old. Then Windows - Win 7 32-bit has been running great for almost the same period.
When I upgrade Windows, I'll finally enter the 64-bit Windows world (better late than never). I know this will involve a lot of reinstalling the programs I use so being retired will give me the extra time to do it all. About three months ago I installed my Linux Mint 64-bit on a bootable partition. My question: When I scratch install Win 10, will it wipe out the entire hard drive, including the Linux partition, or will it only wipe out the NTFS partition? Mint runs great and I want a heads-up on the process to be prepared