代码如下，权当笔记
dd过程可以按control+T查看写入进度
bs=30m表示每次写入30MB数据块
os@OS-7080SFF ~ % diskutil list /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk0 1: EFI EFI 315.6 MB disk0s1 2: Apple_APFS Container disk2 999.9 GB disk0s2 /dev/disk1 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *2.0 TB disk1 1: Windows_NTFS exFAT 2.0 TB disk1s5 /dev/disk2 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +999.9 GB disk2 Physical Store disk0s2 1: APFS Volume MacOS - 数据 769.3 GB disk2s1 2: APFS Volume Preboot 1.9 GB disk2s2 3: APFS Volume Recovery 1.2 GB disk2s3 4: APFS Volume VM 4.3 GB disk2s4 5: APFS Volume MacOS 9.2 GB disk2s5 6: APFS Snapshot com.apple.os.update-... 9.2 GB disk2s5s1 /dev/disk3 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *123.1 GB disk3 1: Windows_NTFS Sandisk 123.1 GB disk3s1 os@OS-7080SFF ~ % os@OS-7080SFF ~ % diskutil unmountDisk /dev/disk3 Unmount of all volumes on disk3 was successful os@OS-7080SFF ~ % os@OS-7080SFF ~ % sudo dd if=/Users/os/Downloads/CentOS-7-x86_64-DVD-2009.iso of=/dev/disk3 bs=30m 149+1 records in 149+1 records out 4712300544 bytes transferred in 2057.854234 secs (2289910 bytes/sec) os@OS-7080SFF ~ % os@OS-7080SFF ~ % os@OS-7080SFF ~ % diskutil eject /dev/disk3 Disk /dev/disk3 ejected os@OS-7080SFF ~ %
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