I have windows and ubuntu (using grub of course) on my machine.
Let's say I've booted to windows and created a virtual machine on Virtualbox that boots from my own physical HDD, the same one that contains the system I'm working on. and when it boots I choose ubuntu, how dangerous is that?
what if I choose to boot from some iso to install another Linux or something? it's okay to lose grub or windows boot. it's easily repairable.
are there any other dangers? like on the stability of windows or hardware?