What is the best program for creating a bootable Flash Drive which will be persistent... i.e. maintain my settings and programs?
Secondly, is there one for making a persistent customized DVD which is read-only? I might prefer this sometimes, when wanting greater security.
Alternatively, can I run a program which will "lock down" the bootable USB flash drive to be read-only after customization? I've heard one can buy expensive flash drives that can do so, but I'm wondering if it can be similarly achieved via either free software or encryption.