When using an older iso file, make sure to uncomment fixdb line in the prep script for the corresponding distro. Otherwise there are circumstances that, even if installation appear to be successful, you may get sync package manager db errors when booted in your distro. This fixdb can make the initial part of installation process very slow, but might be worth it.
The beauty of customizability of AshOS is that we can have a mix of immutable and non-immutable nodes!
Within the forest/tree of AshOS, one can make any snapshot (other than base `0`) mutable. For instance, to make node 9 mutable run `sudo ash immen 9`. This makes a node and any children (that are created afterwards) mutable.