Make MacOS System Boot disk

1, first need to have MacOS system in an apple Stroe download MacOS High Sierra installation program;

2, prepare a USB flash drive with at least 8G capacity;

3. Open "application → utilities → disk Utility" and "Erase" (format) the USB stick into "Mac OS X Extended (journaled)"

format, GUID partition map, and name the USB drive "sierra". " (Note: The drive letter name will correspond to the following command one by one,

If you change the name of the drive, you must make sure that the names in the following commands are the same. )；

As follows:

4. Open "application → utilities → terminal" and copy and paste the following command:

If you want to make high Sierra, like the following command:
sudo/applications/install\ macos\ high\ sierra.app/contents/resources/createinstallmedia --volume/volumes/Sierra --applicationpath/applications/install\ macos\ high\ Sierra.app--n Ointeraction
　　* Please note that the Red "sierra" to the name of your USB stick (3rd);

If you want to make an older version of MacOS sierra", like the following command:

　　Sudo/applications/install\ macos\ sierra.app/contents/resources/createinstallmedia--volume/volumes/Sierra --applicationpath/applications/install\ macos\ sierra.app--nointeraction

5, enter and execute the command, you will be prompted to enter the administrator password, you will start the production process:

As follows:

6, there is done on the production completed;

Make MacOS System Boot disk