******* Working on device /dev/ad4s2 *******
parameters extracted from device are:
cylinders=310101 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=310101 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 232,(unknown)
    start 246698998, size 3443776305 (1681531 Meg), flag 8
	beg: cyl 270/ head 192/ sector 52;
	end: cyl 235/ head 2/ sector 0
The data for partition 2 is:
sysid 1,(Primary DOS with 12 bit FAT)
    start 0, size 0 (0 Meg), flag 10
	beg: cyl 821/ head 91/ sector 3;
	end: cyl 32/ head 16/ sector 0
The data for partition 3 is:
sysid 0,(unused)
    start 1852400737, size 168624231 (82336 Meg), flag 0
	beg: cyl 0/ head 0/ sector 0;
	end: cyl 367/ head 33/ sector 12
The data for partition 4 is:
sysid 63,(unknown)
    start 0, size 0 (0 Meg), flag 45
	beg: cyl 288/ head 82/ sector 18;
	end: cyl 0/ head 13/ sector 10
