Mac U盘引导盘制作Ubuntu18.04.3

方法1.
1.官网下载镜像
ubuntu-18.04.3-desktop-amd64.iso

2.使用命令查看

leo@leodeMacBook-Pro  ~/Downloads  diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *251.0 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                 Apple_APFS Container disk1         250.8 GB   disk0s2

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +250.8 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD            227.9 GB   disk1s1
   2:                APFS Volume Preboot                 44.9 MB    disk1s2
   3:                APFS Volume Recovery                510.3 MB   disk1s3
   4:                APFS Volume VM                      5.4 GB     disk1s4

/dev/disk2 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *31.2 GB    disk2
   1:                        EFI EFI                     209.7 MB   disk2s1
   2:       Microsoft Basic Data USB64                   31.0 GB    disk2s2

3.卸载U盘,准备写入镜像,输入命令:

leo@leodeMacBook-Pro  ~/Downloads  diskutil umountDisk disk2
Unmount of all volumes on disk2 was successful

4.使用dd命令将下载的Ubuntu Linux镜像恢复到U盘上,操作之前我有必要提醒各位小白,万一你不小心输入错了设备名,那么你连哭的机会都没有,因为dd是按扇区直接物理写入磁盘,别到时候找不到数据了再悔不当初没有认真看到这段文字

leo@leodeMacBook-Pro  ~/Downloads  sudo dd if=./ubuntu-18.04.3-desktop-amd64.iso of=/dev/disk2 bs=1m
Password:
1986+1 records in
1986+1 records out
2082816000 bytes transferred in 219.010952 secs (9510100 bytes/sec)

MacOS下使用dd命令制作Ubuntu安装USB盘

结果报错:
【error5】Input/output error

方法2. 成功
推荐使用rufus来制作u盘启动盘，因为快。
https://rufus.ie/