I've solved the problem installing the modified version of mountall and cryptsetup. But this is absolutely dumb! Won't fix is ridiculous: I've installed the server version and I need all the data to be protected and there's no way I put a keyboard and a server because of this. The only way I can't use Debian is because some of the packages are too old, but I'm regretting the idea to put Ubuntu in the new server I have to setup. I really hope someone decide to fix this non-sense behavior. Just allow people to remove plymouth, it's easy.
I've solved the problem installing the modified version of mountall and cryptsetup. But this is absolutely dumb! Won't fix is ridiculous: I've installed the server version and I need all the data to be protected and there's no way I put a keyboard and a server because of this. The only way I can't use Debian is because some of the packages are too old, but I'm regretting the idea to put Ubuntu in the new server I have to setup. I really hope someone decide to fix this non-sense behavior. Just allow people to remove plymouth, it's easy.