# partitions + start/end cylinders
LANG=C fdisk -l | awk '$0 ~ /^\/dev\/sda/ {if ($2 == "*") print $1,$3,$4; else print $1,$2,$3;}'

# heads sectors/track cylinders
LANG=C fdisk -l | awk '$0 ~ /heads.*sectors.*cylinders/ {print $1,$3,$5}'

# bloc size
LANG=C fdisk -l | awk '$0 ~ /^Units/ {print $7}'