Installed Windows 10 and Linux on the same computer. How to properly reinstall Windows 10?

Question

linux

Installed Windows 10 and Linux on the same computer. How to properly reinstall Windows 10 so as not to lose Linux? How to update GRUB as master bootloader?

Answer 1

It is better to install the second OS, which will be used sporadically, in a virtual machine. Now there are no noticeable performance problems with such work.
And in order to reinstall grub after reinstalling Windows (why?), you can start from a live distribution and install grub from it.

Answer 2

you can waste your time, the probability of a successful transition to Linux in this scenario is zero
If you want to switch to Linux, the only way to completely abandon windows

Answer 3

The answer to your question - why do you need it?
You will always have this problem, and waste a lot of time on it. 1) Sometimes it crashes due to crooked updates, software, and ignorance of tricky nuances. (For more than a year, a third of the disk has been occupied by half-killed Windows, which cannot be restored.) 2) From time to time you have to change the size of logical disks, partitions of another OS will interfere.
So:

• Put Windows and Linux on different physical drives!
  
• Use the virtule. All the necessary applications are launched on the virtual machine. In addition, it is easier and faster to run them and use the results in another OS.
  Although some Windows games do not run in a virtual machine. And some system apps for android firmware. Do you need them?
  

Answer 4

Just reinstall and that's it. Do not touch Linux partitions during installation. After installing Windows, the easiest way to get grub back as the main bootloader is to use boot-repair.
https://www.mytechnote.ru/kak-vosstanovit-zagruzch...

Answer 5

As far as I remember, Windows overwrites the bootloader and prevents Linux from booting. Therefore, it is always recommended to install Windows first, and then Linux, since grub can run both Linux and Windows. This is how I have it set up myself. In your case, I would simply reinstall Windows, as usual, on the same disk with its wipe, and after a successful installation, roll grub to be able to run Linux.
IMHO. No matter what they tell you that one OS should be installed in a virtual machine, you need to abandon Windows only with a complete transition to Linux and in general why do you need all this, I’ll note on my own that I have had a bunch of Windows + Linux on one physical disk for two years (SSD) + file cleaning on HDD. Everything works great. I mostly live on Linux, and I only run Windows to play about twice a year or for specific programs (I can’t do it in Wine :D ). Dare ;)