How to painlessly install 3 operating systems on 1 computer?

Question

Operating Systems

Now I have two operating systems on my computer: Debian 10, Windows10.

Now I also want to install Kali Linux and I need advice in what order to install.
You just know yourself, if you install Linux, and then Windows, then Windows will demolish everything in the partitions.

And here you need to somehow correctly approach the issue.

I need Kali to immerse myself in the world of cyberspace and test various software. Feel like NEO

Answer 1

You just know yourself, if you install Linux, and then Windows, then Windows will demolish everything in the partitions.

With sufficient curvature of the hands - theoretically yes.
Set as you like, just put another REFInd later

Answer 2

Kali feels fine even from a flash drive. For the completely lazy, you can create a partition on the disk and specify it as permanent. As a result, reboot by inserting a USB flash drive and select the option to mount data. Enter your password and you're all set

Answer 3

The best way to rule out problems with windows/linux is to install the linux bootloader on a physical disk different from the one where windows is located (this is what it periodically does not like, and it ignores the partitions with the system itself), i.e. you can put grub on a USB flash drive and forget about problems forever (select the system not through grub but in the BIOS by selecting the boot disk by F12/F11/F8)
ps virtualization solves many problems of multiple operating systems very beautifully. and in any order, even from linux, run windows, or vice versa ... for example, put the xen hypervisor, and already inside it put both Windows and linux as much as you want (in this option there will be difficulties with the video card in windows, sometimes solved)