guest: DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
hw.ncpu: 6
devfs md nodes at start: /dev/md0 (4, 0x1e110007) root:operator 0640, /dev/md0s0 (4, 0x1e100007)
after opens: md1/md1s0 auto-created (DF-2478 behavior)
kernel source: /usr/src/sys/dev/disk/md/md.c matches audit tree (line 303 verified)
boundary matrix (probe3):
in-bounds 4MiB               off=0x400000 r=512 errno=0
last-sector 10MiB-512        off=0x9ffe00 r=-1 errno=22   (media is 20000 sectors = 0x9C4000 bytes)
at-EOF 10MiB                 off=0xa00000 r=-1 errno=22
past-EOF 10MiB+512           off=0xa00200 r=-1 errno=22
wrap 0x1FFFFFFE00            off=0x1ffffffe00 r=-1 errno=22
half-wrap 0x7FFFFFFE00       off=0x7ffffffe00 r=-1 errno=22