drive information

		#
		#	lsblk -b -p
		#	lsblk -b -p --json
		#	lsblk -S
		#
		[ZSH] lsblk -b -p

			NAME        MAJ:MIN RM        SIZE RO TYPE MOUNTPOINTS
			/dev/sda      8:0    0 40018599936  0 disk 
			├─/dev/sda1   8:1    0   629145600  0 part /boot/efi
			├─/dev/sda2   8:2    0  1073741824  0 part /boot
			└─/dev/sda3   8:3    0 38313918464  0 part /home
													   /
			/dev/sdb      8:16   0 40018597888  0 disk 
			/dev/zram0  252:0    0  8589934592  0 disk [SWAP]
		
		[ZSH] cat /proc/partitions
		
		[ZSH] hdparm -v /dev/sdb
		
		[ZSH] blockdev --getsz /dev/sdb
			
			78161324
			
		#
		#	https://en.wikipedia.org/wiki/Util-linux
		#	https://github.com/util-linux/util-linux
		#
		[ZSH] fdisk -l
			
			Disk /dev/sdc: 37.27 GiB, 40018597888 bytes, 78161324 sectors
			Disk model: high speed      
			Units: sectors of 1 * 512 = 512 bytes
			Sector size (logical/physical): 512 bytes / 512 bytes
			I/O size (minimum/optimal): 512 bytes / 512 bytes
			
		therefore:
			40,018,597,888
		
			drive path: /dev/sdb
			byte indexes: [ 0, 40018597887 ]
			
			40018597888 / 78161324 = 512

			#
			#	/dev/sda is the operating system drive
			#