Thanks for the quick reply. In order to learn more about grub I intend to write a live-debian as well as an installer-image (e.g. DVD size) on an USB-stick which is able to boot from both legacy bios and UEFI. While trying to do this I had some problems which end up in /grub rescue/ - it turned out that /prefix/ and /root/ where pointing to the wrong partition (/hd0,gpt2/ instead of /hd0,gpt4/). Even though I was able to fix this problem in /grub rescue/ the problem reappeared after reboot. Finally, I found within the man pages of /grub-mkimage/ the -c option which seems to be able to solve my problem - but I couldn't find any example on how to do this. I was also looking into the /grub-install/ script but it turned out that it would (at least for me) take quite long to understand what's going on (... writing a script is usally more easy than debugging a script from someone else). I was able to solve the above mentioned problem by starting from scratch but I still would like to understand (in more detail) how grub is working. For that reason I was asking for an example on how to build grub with /grub-mkimage/ and /grub-setup/ only. Further comments are welcome ...
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