15 of SSDs MacBook Pro upgrade, create a bootable installer macOS
15 models of MacBook Pro 8G memory 128G SSD, with the increase in the use of time, more and more hard disk is not enough. Just 15 of the solid state is not welded on the motherboard, it can be replaced, choose the right brand and capacity after the purchase of the Samsung 760P 512G SSD.
After the purchase is on a new solid-state re-brush macOS system, re-brush system, there are two main ways: First, the online upgrade, the speed depends on your network speed, more metaphysics. Second, after the first download the production of a good system image file into the U disk
Download the installer macOS
After the download is the official system, search macOS in the App Store to find the latest system now Download
Once you have downloaded remember not to use, do not install it, placed there do not control, you may have to install macOS in the application Mojave such an application is that you just downloaded from the system.
Making U disk launcher
Prepare a not less than 8G U disk (the system is almost 6G).
The preferred U disk format:
In the application, find the disk management tool, find your U disk in the left external device, select Erase.
note! Be sure to set their own name, we must remember that behind to make a boot needs to find the name of your U disk and making the format to select the default macOS Extended (Journaled)
Continue saving the connection state after the U disk formatted
Production starter
Many online tutorials is the use of third-party software to make DiskMaker X starters, it is not recommended to use directly with the official recommendation of the terminal using the code in production
Making the code is very simple, the input line of code in the terminal.
Only for Mojave system
sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
Code explanation: sudo: Administrator Mode
Applications/Install\ macOS\ Mojave.app : 我们下载的系统路径
Contents/Resources : 是下载系统的包内容，指定包内容
createinstallmedia : 是创造媒介
createinstallmedia --volume /Volumes/你刚刚格式化U盘的名称 ：创造媒介，并指定他的路径+名称
名称是你自己定义的，所以如果你直接复制代码那你在格式化U盘的时候就把U盘名称设置为： MyVolue 如果你自定义了名称，就在代码中将最后这个名称变更
代码输入后回车，系统会让你输入密码， 输入你的管理员密码即可(在终端中输入密码是不会显示的，输入完后回车即可)
在输入完密码后系统会在终端跳出一个提示，意思是需要抹除你的U盘并制作启动器，你是否同意， 直接输入 Y 回车即可
当进度执行完，你看到你的用户名，并可以在终端中输入命令的时候 代表制作已经完成，在访达中可以看到外置U盘名称为 Install macOS Mojave 就表示整个制作完成了。
最后要注意： 本教程不适合18款的MacBook Pro 18款的由于内置T2芯片，默认情况下会阻止外部设备引导启动系统，需要在安全性实用工具中设置允许从外部介质启动！ 千万注意18款或带有T2芯片的设备