I am not able to load two kernels in the loader. If I want to load a newer kernel, I need to unload the first one, otherwise it gets in the OFW trap. Example: >> FreeBSD/powerpc Open Firmware boot block Boot path: /vdevice/v-scsi@2000/disk@8000000000000000 Boot loader: /boot/loader Boot volume: /vdevice/v-scsi@2000/disk@8000000000000000:2 Consoles: Open Firmware console FreeBSD/powerpc64 Open Firmware loader, Revision 0.1 (Sun Feb 18 22:29:36 CET 2018 root@free8) Memory: 8388608KB Booted from: /vdevice/v-scsi@2000/disk@8000000000000000 Loading /boot/defaults/loader.conf /boot/kernel/kernel data=0x129ebb0+0x4ccf90 syms=[0x8+0x16d370+0x8+0x1698ac] /boot/entropy size=0x1000 Hit [Enter] to boot immediately, or any other key for command prompt. Type '?' for a list of commands, 'help' for more detailed help. OK load /boot/kernel.old/kernel /boot/kernel.old/kernel data=0x129db60+0x4ccf60 ( 700 ) Program Exception [ 0 ] R0 .. R7 R8 .. R15 R16 .. R23 R24 .. R31 0000000032fc6a70 0000000002c04000 0000000000000000 000000005f690000 0000000002c46a70 00000000000001b4 0000000000000000 0000000000008000 0000000000000000 000000000344bca4 0000000002c46ad8 0000000002c72080 000000000000005c 0000000002c442dc 0000000002c46adc 0000000000000000 ffffffffffffffef 0000000000fd0000 0000000000000000 0000000000fd0000 0000000000000000 0000000000000000 0000000000007fff 0000000002c69fc0 00000000000001fa 0000000000000000 0000000002c46b1c 0000000000000000 0000000002c46a88 0000000000000000 0000000002c46adc 00000000000001fa CR / XER LR / CTR SRR0 / SRR1 DAR / DSISR 88020028 0000000002c3b20c 0000000002c02328 0000000000000000 0000000000000000 0000000002c2f160 0000000000083000 00000000 Since the loader is claiming a specific memory area from the OFW, it does not fit both kernel. We should, either, ask for more memory for the newer kernel, or, reuse the same memory as used in the first kernel.