mattspc# fdisk /dev/da0
******* Working on device /dev/da0 *******
parameters extracted from in-core disklabel are:
cylinders=2431 heads=255 sectors/track=63 (16065 blks/cyl)

Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=2431 heads=255 sectors/track=63 (16065 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 0 (0000),(unused)
    start 63, size 80262 (39 Meg), flag 0
        beg: cyl 0/ head 1/ sector 1;
        end: cyl 4/ head 254/ sector 63
The data for partition 2 is:
sysid 11 (0x0b),(DOS or Windows 95 with 32 bit FAT)
    start 80325, size 38973690 (19030 Meg), flag 80 (active)
        beg: cyl 5/ head 0/ sector 1;
        end: cyl 1023/ head 254/ sector 63
The data for partition 3 is:
sysid 0 (0000),(unused)
    start 24897, size 0 (0 Meg), flag 0
        beg: cyl 0/ head 0/ sector 0;
        end: cyl 370/ head 0/ sector 50
The data for partition 4 is:
<UNUSED>