Dear fellow coders, i'd like create another file image that contains my SDK files and then burn in together with my Linux kernel; rootfs and Uboot. Is there any standard steps to do so?

Thank you!

 

have look at this - and the exact description of each items function
https://sourceforge.net/directory/os:windows/?q=burn disk image
there is no point of creating specific disk-image compliant with some HDD technology
as after 15y those technologies may be forgotten or virtualised as DOS-BOX ? but it does not support HDD images . . . wrong
https://www.dosbox.com/wiki/IMGMOUNT