Is there any way I could put some files on my sdcard (like for instance my customized .bashrc) and have it available after the first boot (installation) process is over?
many thanks for your question. The rootFS on your SD card is formed as ext4 file system. Therefore you would need a system that is able to r/w ext4 . If you have such a system, you simple could place your SD card and mount the rootFS.