Find out what disks are in the system

root@mango:/dev# sfdisk -l

Disk /dev/sda: 29185 cylinders, 255 heads, 63 sectors/track
sfdisk: Warning: extended partition does not start at a cylinder boundary.
DOS and Linux will interpret the contents differently.
Units: cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/sda1   *      0+  27135-  27136- 217963520   83  Linux
/dev/sda2      27135+  29185-   2050-  16464897    5  Extended
/dev/sda3          0       -       0          0    0  Empty
/dev/sda4          0       -       0          0    0  Empty
/dev/sda5      27135+  29185-   2050-  16464896   82  Linux swap / Solaris

Disk /dev/sdb: 121601 cylinders, 255 heads, 63 sectors/track

Disk /dev/sdc: 121601 cylinders, 255 heads, 63 sectors/track

root@mango:/dev# lshw -class disk
  *-disk                  
       description: ATA Disk
       product: OCZ-ARC100
       physical id: 0.0.0
       bus info: scsi@0:0.0.0
       logical name: /dev/sda
       version: 1.00
       serial: A22L1061449007331
       size: 223GiB (240GB)
       capabilities: partitioned partitioned:dos
       configuration: ansiversion=5 sectorsize=512 signature=2a960743
  *-disk
       description: ATA Disk
       product: WDC WD10EZEX-00B
       vendor: Western Digital
       physical id: 0.0.0
       bus info: scsi@1:0.0.0
       logical name: /dev/sdb
       version: 1A01
       serial: WD-WCC3F3NFSS65
       size: 931GiB (1TB)
       configuration: ansiversion=5 sectorsize=4096
  *-cdrom
       description: DVD-RAM writer
       product: iHAS124   E
       vendor: ATAPI
       physical id: 0.0.0
       bus info: scsi@3:0.0.0
       logical name: /dev/cdrom
       logical name: /dev/cdrw
       logical name: /dev/dvd
       logical name: /dev/dvdrw
       logical name: /dev/sr0
       version: 4L08
       capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
       configuration: ansiversion=5 status=nodisc
  *-disk
       description: ATA Disk
       product: WDC WD10EZEX-00B
       vendor: Western Digital
       physical id: 0.0.0
       bus info: scsi@4:0.0.0
       logical name: /dev/sdc
       version: 1A01
       serial: WD-WCC3F1CX4JKE
       size: 931GiB (1TB)
       configuration: ansiversion=5 sectorsize=4096

root@mango:/dev# lsblk -f
NAME   FSTYPE LABEL UUID                                 MOUNTPOINT
sda                                                      
├─sda1 ext4         1987feef-7ad1-4e00-8578-9559d8aff148 /
├─sda2                                                   
└─sda5 swap         c17c259d-e3a8-4220-9f0d-9df4af33fa34 [SWAP]
sdb                                                      
sdc                                                      
sr0                                                      

root@mango:/dev# blkid
/dev/sda1: UUID="1987feef-7ad1-4e00-8578-9559d8aff148" TYPE="ext4" PARTUUID="2a960743-01" 
/dev/sda5: UUID="c17c259d-e3a8-4220-9f0d-9df4af33fa34" TYPE="swap" PARTUUID="2a960743-05" 

root@mango:/dev# ls -l /dev/disk/by-uuid/
total 0
lrwxrwxrwx 1 root root 10 Jan  4 08:24 1987feef-7ad1-4e00-8578-9559d8aff148 -> ../../sda1
lrwxrwxrwx 1 root root 10 Jan  4 08:24 c17c259d-e3a8-4220-9f0d-9df4af33fa34 -> ../../sda5

==============================================
hostname:mango, os:Ubuntu 14.10 Utopic Unicorn
==============================================
ASRock Z97 Extreme6 LGA 1150 Intel Z97 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Intel Core i7-4790 Haswell Quad-Core 3.6GHz LGA 1150 84W Desktop Processor Intel HD Graphics 4600
Team Xtreme 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 2400 Desktop Memory
OCZ ARC 100 ARC100-25SAT3-240G 2.5" 240GB SATA III MLC Internal Solid State Drive
Western Digital WD Blue WD10EZEX 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
ENERMAX Ostrog GT ECA3280A-BR Black / Red Steel / Plastic ATX Mid Tower Computer Case