在mac上制作 U盘 启动盘
1. 用hdiutil将ISO转dmg¶
$ hdiutil convert -format UDRW -o CentOS-7-x86_64-DVD-1804 CentOS-7-x86_64-DVD-1804.iso
Reading Master Boot Record (MBR : 0)...
Reading CentOS 7 x86_64 (Apple_ISO : 1)...
Reading (Type EF : 2)...
Reading CentOS 7 x86_64 (Apple_ISO : 3)...
.........................................................................................
Elapsed Time: 2m 55.451s
Speed: 24.3Mbytes/sec
Savings: 0.0%
created: /Volumes/data/software/CentOS-7-x86_64-DVD-1804.dmg
这个时候我们就得到了一个.dmg硬盘镜像文件。
2. Unmount U盘¶
查看U盘，路径通常为/dev/diskN
Unmount U盘
3. 拷入镜像¶
$ sudo dd if=CentOS-7-x86_64-DVD-1804.dmg of=/dev/disk4 bs=1m
4262+1 records in
4262+1 records out
4469153792 bytes transferred in 2602.575198 secs (1717204 bytes/sec)