Debug_Disk(da0)  flags=0  bios_geom=522/255/63 = 8385930
  boot1=0x0, boot2=0x0, bootmgr=0x0
-->        0x8050040        0  8399520  8399519 da0      whole    0x00 
  -->      0x8050080        0  8369865  8369864 da0s1    fat      0x06 
  -->      0x8050100  8369865    29655  8399519 -        unused   0x00 

========================================================================
Trying to create 'freebsd' partition inside da0s1
Cannot create chunk
Died on line 291 somewhere in libdisk(3).

Debug_Disk(da0)  flags=0  bios_geom=522/255/63 = 8385930
  boot1=0x0, boot2=0x0, bootmgr=0x0
-->        0x8050040        0  8399520  8399519 da0      whole    0x00 
  -->      0x8050080        0  8369865  8369864 da0s1    fat      0x06 
  -->      0x8050100  8369865    29655  8399519 -        unused   0x00 

========================================================================
Changing slice type to 'freebsd'

Debug_Disk(da0)  flags=0  bios_geom=522/255/63 = 8385930
  boot1=0x0, boot2=0x0, bootmgr=0x0
-->        0x8050040        0  8399520  8399519 da0      whole    0x00 
  -->      0x8050080        0  8369865  8369864 da0s1    freebsd  0xa5 
  -->      0x8050100  8369865    29655  8399519 -        unused   0x00 

========================================================================
Trying to create 'freebsd' partition inside da0s1

Debug_Disk(da0)  flags=0  bios_geom=522/255/63 = 8385930
  boot1=0x0, boot2=0x0, bootmgr=0x0
-->        0x8050040        0  8399520  8399519 da0      whole    0x00 
  -->      0x8050080        0  8369865  8369864 da0s1    freebsd  0xa5 C
    -->    0x80500c0        0       63       62 -        unused   0x00 
    -->    0x8050140       63  8369802  8369864 da0s1a   part     0xa5 R
  -->      0x8050100  8369865    29655  8399519 -        unused   0x00