$ gptinfo.rb /dev/sdb "/dev/sdb" MBR: initialized. - 0c [ 0, 0,33]-[ 255,254,63] 32( 60,062,468) 2^5(2^2 * 409 * 36713) - 00 [ 0, 0, 0]-[ 0, 0, 0] 0( 0) 0(0) - 00 [ 0, 0, 0]-[ 0, 0, 0] 0( 0) 0(0) - 00 [ 0, 0, 0]-[ 0, 0, 0] 0( 0) 0(0) 30,752,000,000 Bytes (= 2^11 * 5^6 * 961) 60,062,500 Blocks (= 2^2 * 5^6 * 961)