201-vn0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
202-vn0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
203:panic: ffs_balloc: blk too big
204-cpuid = 0
205-Trace beginning at frame 0xfffff801184733f8
206-ffs_balloc() at ffs_balloc+0xfff 0xffffffff80906cff 
207-ffs_balloc() at ffs_balloc+0xfff 0xffffffff80906cff 
208-vop_balloc() at vop_balloc+0xaf 0xffffffff8070b94f 
209-ffs_write() at ffs_write+0x16a 0xffffffff809125aa 
210-vop_write() at vop_write+0x9d 0xffffffff8070a58d 
211-vn_write() at vn_write+0x134 0xffffffff80708b44 
212-Debugger("panic")
213-
214-CPU0 stopping CPUs: 0x0000003e
215- stopped
216-Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
217-db>