Hi Ruslik
You need to learn about persistence. The operating systems directories (/bin, /dev, /etc, /lib, /mnt, /proc, /run, /sbin, /sys, /usr, /var)
all get rebuilt from scratch every time you boot. Unless made persistent, /opt and /home get restored from a backup file. Changes
made to the operating systems directories should either be backed up or packaged as extensions. I think you'll find this book
very helpful in learning about how Tinycore works:
http://tinycorelinux.net/book.htmlYou should probably also spend a little time looking through the Wiki:
http://wiki.tinycorelinux.net/wiki:start