watchas# fdisk  ad2
******* Working on device /dev/ad2 *******
parameters extracted from in-core disklabel are:
cylinders=19152 heads=16 sectors/track=255 (4080 blks/cyl)

Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=19152 heads=16 sectors/track=255 (4080 blks/cyl)

Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 15 (0x0f),(Extended DOS (LBA))
    start 16065, size 19518975 (9530 Meg), flag 0
        beg: cyl 1/ head 0/ sector 1;
        end: cyl 1023/ head 254/ sector 63
The data for partition 2 is:
sysid 130 (0x82),(Linux swap or Solaris x86)
    start 19535040, size 947835 (462 Meg), flag 0
        beg: cyl 1023/ head 0/ sector 1;
        end: cyl 1023/ head 254/ sector 63
The data for partition 3 is:
sysid 12 (0x0c),(DOS or Windows 95 with 32 bit FAT (LBA))
    start 20482875, size 36853110 (17994 Meg), flag 0
        beg: cyl 1023/ head 0/ sector 1;
        end: cyl 1023/ head 254/ sector 63
The data for partition 4 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
    start 57335985, size 20804175 (10158 Meg), flag 80 (active)
        beg: cyl 1023/ head 0/ sector 1;
        end: cyl 1023/ head 254/ sector 63
watchas# fdisk ad2s4
******* Working on device /dev/ad2s4 *******
parameters extracted from in-core disklabel are:
cylinders=5099 heads=16 sectors/track=255 (4080 blks/cyl)

Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=5099 heads=16 sectors/track=255 (4080 blks/cyl)

fdisk: can't read fdisk partition table
fdisk: /boot/mbr: length must be a multiple of sector size
watchas#