Disk /dev/sdb: 7948 MB, 7948206080 bytes, 15523840 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00055920

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1     7372799     3686399+  83  Linux
/dev/sdb2         7372800     7389183        8192   82  Linux swap / Solaris
/dev/sdb3         7389184     7454719       32768    c  W95 FAT32 (LBA)