MacOS 制作 Ubuntu 安装盘

╰─➤  diskutil list
/dev/disk2 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *30.9 GB    disk2
   1:                 DOS_FAT_32 KINGSTON                30.9 GB    disk2s1

╰─➤  diskutil unmountDisk /dev/disk2
Unmount of all volumes on disk2 was successful

• 大概7分钟完成

╰─➤  sudo dd if=/home/ubuntu-18.04.4-desktop-amd64.iso of=/dev/disk2 bs=1m
Password:
++++2028+1 records in
2028+1 records out
2126544896 bytes transferred in 399.609755 secs (5321554 bytes/sec)

• 推出U盘
  

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参考：
1.在 MacOS 上制作 CentOS 8 系统的 USB 安装盘