Germany did not legalise. It got decriminalise to a very Limited extend.
E.g. the "Bundesgerichtshof" ruled a few days ago that 7.5 g of pure THC is a "nicht geringe Menge" which means 3 months Minimum. Which means that If you have 50 g of Hash with 40% THC you already have 20 g of pure THC. The CannG explicitly states that having 50 g of Hash at Home is legal. Lets See how that plays Out.
If you use ventoy, you can put multiple ISOs on one USB.