Eu preciso saber se minhas fotos serão apagadas se eu reiniciar meu iPod.
I need to know if my pictures are going to be erased if I restart my iPod.
Only restarting you iPod will not erase your pictures. But for your Convenience you can plugin in you iPod on your computer or mac and make a backup with iTunes.
It you reset your iPod than your data will be lost. So make a backup with iTunes before.