@pid_eins @vurpo Since both entries would be using the same kernel and hence use the same /lib/modules/$(uname -r)/, you need a mechanism to have multiple versions of your modules folder. If you're serious about preventing older boot entries from breaking retroactively, i think full system snapshots are the only option. Short of that, there might be some compromises like bundling a kernel and all modules, which of course does not protect userspace, but might be easier for commonly used distros.