1. 下载Ubuntu的iso镜像文件
地址为:https://ubuntu.com/download/desktop
2. 把iso镜像文件转换成dmg文件
bash
cd Downloads/
hdiutil convert -format UDRW -o ubuntu.iso ubuntu-18.04.2-desktop-amd64.iso
-format为生成文件的权限;UDRW :表示转换成有read/write的权限的镜像。
终端里面出现以下的成功信息:
Reading Protective Master Boot Record (MBR : 0)...
Reading GPT Header (Primary GPT Header : 1)...
Reading GPT Partition Data (Primary GPT Table : 2)...
Reading ISO9660 (DOS_FAT : 3)...
...............................................................................
Reading Appended2 (C12A7328-F81F-11D2-BA4B-00A0C93EC93B : 4)...
...............................................................................
Reading Gap1 (DOS_FAT : 5)...
...............................................................................
Reading Ubuntu 22.04.2 LTS amd64 (Apple_ISO : 6)...
...............................................................................
Reading GPT Partition Data (Backup GPT Table : 7)...
...............................................................................
Reading GPT Header (Backup GPT Header : 8)...
...............................................................................
Elapsed Time: 10.566s
Speed: 444.7MB/s
Savings: 0.0%
created: /Users/wangyifan/Desktop/ubuntu.iso.dmg
- 插入U盘,并用命令行卸载U盘
注意找到U盘的路径,使用命令
bash
diskutil list
找到U盘的路径为/dev/disk4,并使用命令行卸载U盘:
bash
diskutil unmountDisk /dev/disk4
显示信息为:
Unmount of all volumes on disk4 was successful。
- 把iso文件写入U盘
bash
mv ubuntu.iso.dmg ubuntu.iso
sudo dd if=./ubuntu.iso of=/dev/disk4 bs=1m
显示信息为:
4699+1 records in
4699+1 records out
4927586304 bytes transferred in 300.753285 secs (16384148 bytes/sec)
- 弹出U盘
bash
sudo eject /dev/disk4