It seems that amd64 booting is broken, likely as a result of the recent addition of support for multiboot2.
See [1] and [2] [1] http://mail-index.netbsd.org/source-changes-d/2019/12/10/msg011875.html [2] http://mail-index.netbsd.org/source-changes/2019/12/10/msg111777.html +--------------------+--------------------------+-----------------------+ | Paul Goyette | PGP Key fingerprint: | E-mail addresses: | | (Retired) | FA29 0E3B 35AF E8AE 6651 | p...@whooppee.com | | Software Developer | 0786 F758 55DE 53BA 7731 | pgoye...@netbsd.org | +--------------------+--------------------------+-----------------------+