******* Working on device /dev/ad4 *******
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 238,(EFI GPT)
    start 1, size 409639 (200 Meg), flag 0
	beg: cyl 0/ head 0/ sector 2;
	end: cyl 120/ head 22/ sector 14
The data for partition 2 is:
sysid 175,(unknown)
    start 409640, size 293339136 (143232 Meg), flag 0
	beg: cyl 120/ head 22/ sector 15;
	end: cyl 1023/ head 48/ sector 62
The data for partition 3 is:
sysid 166,(OpenBSD)
    start 294012928, size 18567168 (9066 Meg), flag 80 (active)
	beg: cyl 1023/ head 29/ sector 56;
	end: cyl 1023/ head 14/ sector 52
The data for partition 4 is:
<UNUSED>
