1、首先优盘插入MAC后检查一下，可以看到disk5是我要用的优盘。 实际上Proxmox占用的空间并不大，4GB，8GB的优盘都够用了。
Anthonys-MacBook-Pro-4:~ anthony$ diskutil list
/dev/disk0 (internal):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme 251.0 GB disk0
1: EFI EFI 314.6 MB disk0s1
2: Apple_APFS Container disk1 250.0 GB disk0s2
/dev/disk1 (synthesized):
...
/dev/disk5 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *16.0 GB disk5
1: 0xEF 9.2 MB disk5s2
2、Unmount优盘
Anthonys-MacBook-Pro-4:~ anthony$ diskutil unmountDisk /dev/disk5
Unmount of all volumes on disk5 was successful
3、将下载的Proxmox ISO文件写入优盘，大概需要几分钟：
Anthonys-MacBook-Pro-4:~ anthony$ sudo dd if=/Users/anthony/Downloads/proxmox-ve_6.0-1.iso of=/dev/disk5 bs=4m
185+1 records in
185+1 records out
777971712 bytes transferred in 211.684135 secs (3675154 bytes/sec)
Anthonys-MacBook-Pro-4:~ anthony$
搞定，可以用来启动安装了。从mac访达可以看到启动文件。
