mac系统下烧录ubuntu U盘启动盘

下载ubuntu镜像iso文件到 ~/Download目录。打开终端。cd ~/Download? Downloads hdiutil convert -format UDRW -o ubuntu-12.04.4-server-i386.img ubuntu-12.04.4-server-i386.iso正在读取Master Boot Record（MBR：0）…正在读取Ubuntu-Server 12.04.4 LTS i386 （Apple_ISO：1）…正在读取（Windows_NTFS_Hidden：2）……………………………………………………………………….经过时间： 4.883s速度：135.3M 字节/秒节省：0.0%created: /Users/pypcjs/Downloads/ubuntu-12.04.4-server-i386.img.dmg? Downloads diskutil list/dev/disk0#: TYPE NAME SIZE IDENTIFIER0: GUID_partition_scheme *121.3 GB disk01: EFI EFI 209.7 MB disk0s12: Apple_HFS Macintosh HD 120.5 GB disk0s23: Apple_Boot Recovery HD 650.0 MB disk0s3/dev/disk1#: TYPE NAME SIZE IDENTIFIER0: FDisk_partition_scheme *4.0 GB disk11: Windows_FAT_32 GSP1RMCULXF 4.0 GB disk1s4? Downloads diskutil unmountDisk /dev/disk1Unmount of all volumes on disk1 was successful? Downloads sudo dd if=ubuntu-12.04.4-server-i386.img.dmg of=/dev/rdisk1 bs=1m661+0 records in661+0 records out693108736 bytes transferred in 197.139766 secs (3515824 bytes/sec)?? Downloads? diskutil eject /dev/disk1Unable to find disk for /dev/disk1

大概思路是，先转换iso文件成img.dmg文件，然后dd到U盘去（这一步是比较耗时的过程，请耐心等待）。然后大功告成，拿出U盘插到其它电脑就可以启动安装linux了

原文出处：

http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx