Due to the immediate testing efforts of HAIKU Release 1 Alpha 4, several critical bugs were detected by testers and reported on our bug tracker. On several hardware configurations, those issues prevented Haiku from booting properly. Since then, those bugs have been squashed and are resolved in this bugfix update, R1 Alpha 4.1.
This is a companion discussion topic for the original entry at https://www.haiku-os.org/news/2012-11-14_haiku_release_1_alpha_41/