mac + ubuntu 双系统

refs

参考：Installing Ubuntu on an external SSD drive on a Macbook – Floris van Breugel

其中，解决Disk Utilities 没有分区选项：

• No partition scheme option when erasing a USB disk in MacOS High Sierra? - Ask Different

其中，如何制作bootloader：

推荐：

- [Create a bootable USB stick on macOS | Ubuntu](https://ubuntu.com/tutorials/create-a-usb-stick-on-macos#7-boot-your-mac)
- [balenaEtcher - Flash OS images to SD cards & USB drives](https://www.balena.io/etcher/)

制作 bootloader 到 partition （正在尝试）： commands:

  ```sh
  # get target partition mounted point
  diskutil list
  MP=/dev/disk0s4
  ISO_FP=??

  diskutil unmount $MP
  dd if=$ISO_FP of=$MP bs=1m

  diskutil eject $MP      
  ```
ref:
  - https://osxdaily.com/2015/06/05/copy-iso-to-usb-drive-mac-os-x-command/

mac官方（不推荐）：

- [How to create a bootable installer for macOS - Apple Support](https://support.apple.com/en-us/HT201372)`

ubuntu无法读取mac的ssd

• macintosh - How can you get any version of Linux to see the 2018 MacBook Pro SSD? - Unix & Linux Stack Exchange said: