Transition From adb and kadb
The transition from using the legacy adb(1) utility to using mdb(1) is relatively
simple: MDB provides evolutionary compatibility for the adb syntax, built-in commands, and command-line options.
MDB attempts to provide compatibility for all existing adb(1) features, but it
is not bug-for-bug compatible with adb(1). This appendix briefly discusses several features
of adb(1) that are not precisely emulated by mdb(1) in order to guide users
to the new functionality