> installboot -v /dev/rwd0a /usr/mdec/bootxx_ffsv2
That updates stage 1, you also need to put the second stage in place:
cp /usr/mdec/boot /
Thanks i have got a little further now but the kernel drops to db
just before the login prompt is displayed
following copied by hand
uvm_fault(0xc0a75640, 0, 1) -> 0xe
fatal page fault in supervisor mode
trap type 6 code 0 eip c0b97930 cs 8 eflags 10292 cr2 34 ilevel 0
kernel: supervisor trap page fault, code=0
Stopped in pid 0.47 (system) at ffs:ffs_update+0x18: testb
$0x1,0x34(%eax)
db{0}>bt
ffs_update(cc2c3730,0,0,0,cc2c3758,200,0,4,0,0) at ffs:ffs_update+0x18
ffs_full_fsync
(cc2c3730,208
,c09272e0,cc2c3730,cc2c3730,c1e95860,cc313cfc,c06dd96e,cc313cd8,12)
at ffs:ffs_full_fsync+0x48a
spec_fsync
(cc313cd8,12
,cc313cfc,c0474e46,cc2c3730,c0926fa0,cc2c3730,cb166f00,8,0) at
netbsd:spec_fsync+0x4b
VOP_FSYNC(cc2c3730,cb166f00,8,0,0,0,0,cc2c6ac0,c0604ac0,cc2c6ac0) at
netbsd:VOP_FSYNC+0x7e
sched_sync(cc2c6ac0,0,c01002cd,0,c01002cd,0,0,0,0,0) at
netbsd:sched_sync+0x14a
db{0}>