noch ein Grund, (noch) nicht zu Catalina zu wechseln: WARNING: [raspberrypi.org] As of 18th October 2019, it appears balenaEtcher for Macintosh does NOT work on MacOS 10.15 Catalina. Until this is fixed, we recommend you do not upgrade to Catalina.
Vielleicht hier mal reingucken https://twosortoftechguys.wordpress.com/2019/09/29/if-you-have-privacy-concerns-regarding-etcher-now-known-as-balenaetcher-here-are-some-alternatives/ -> https://www.tweaking4all.com/software/macosx-software/applepi-baker-v2/#InstallingApplePiBaker