一、查看u盘的设备名称
topeet@ubuntu:~/Android$ sudo fdisk -l
Disk /dev/sda: 161.1 GB, 161061273600 bytes
255 heads, 63 sectors/track, 19581 cylinders, total 314572800 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: 0x000675b5
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 301989887 150993920 83 Linux
/dev/sda2 301989888 314572799 6291456 82 Linux swap / Solaris
Disk /dev/sdb: 1966 MB, 1966080000 bytes
255 heads, 63 sectors/track, 239 cylinders, total 3840000 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: 0x01dfe2ef
Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 3839999 1918976 6 FAT16
二、输入写镜像的命令到/dev/sdb
topeet@ubuntu:~/Android$ sudo dd if=./ubuntu-14.04.5-desktop-amd64.iso of=/dev/sdb bs=4M
263+1 records in
263+1 records out
1104052224 bytes (1.1 GB) copied, 208.182 s, 5.3 MB/s