Regarding testing of OS Development specific Code

[supratim chakraborty <sup270792@xxxxxxxxx>]

I searched on the internet for an apt answer but i couldn't find one so i thought this could be a newbie-friendly place to shoot the doubt 

I have developed an interest in OS development (kernel) and have successfully built/compiled/configured the kernel source but i would like to know as to how do OS developers test their code ,as in-  it could be really painful to make some changes to the code and then again recompile the entire kernel , make a new image and then boot from that 

in essence it would require - 1. Making changes 2. Compiling 3. Reflashing the kernel 4. Rebooting the machine (physical or virtual as the case may be)

So I am pretty sure that this is not the way the work's done , so can i have the needed enlightenment as to how do OS developers go about making hacks /changes to the code and then testing the new build 

Regards
Supratim Chakraborty
about.me/borax12

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