Картинка fdisk -t выдаваемая

******* Working on device /dev/ad0 *******
parameters extracted from in-core disklabel are:
cylinders=484521 heads=16 sectors/track=63 (1008 blks/cyl)

Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=484521 heads=16 sectors/track=63 (1008 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 12 (0x0c),(DOS or Windows 95 with 32 bit FAT (LBA))
    start 85755033, size 402637032 (196600 Meg), flag 0
        beg: cyl 1023/ head 255/ sector 63;
        end: cyl 1023/ head 254/ sector 63
The data for partition 2 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
    start 63, size 85754907 (41872 Meg), flag 80 (active)
        beg: cyl 0/ head 1/ sector 1;
        end: cyl 1023/ head 254/ sector 63
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>

fdisk -t ad0s1

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 80 (0x50),(DM (disk manager))
    start 2036473922, size 1380535072 (674089 Meg), flag 65
        beg: cyl 10/ head 0/ sector 13;
        end: cyl 68/ head 87/ sector 47
The data for partition 2 is:
sysid 40 (0x28),(unknown)
    start 1634885968, size 544108391 (265677 Meg), flag 20
        beg: cyl 32/ head 86/ sector 46;
        end: cyl 32/ head 67/ sector 41
The data for partition 3 is:
sysid 45 (0x2d),(unknown)
    start 57, size 0 (0 Meg), flag 31
        beg: cyl 55/ head 57/ sector 57;
        end: cyl 57/ head 49/ sector 57
The data for partition 4 is:
<UNUSED>

С геометрией полная чихорда, может кто нибудь развеять дымку, или направление дать???