Yes, go to Disk Utilities again and erase the partition! You will see TWO partitions, and you can only erase ONE now. Yeah! Something different shown! There is an INTERNET icon running, showing that something is being downloaded I supposed.Ī new error page shown that the installation cannot be done on the drive with installation file inside. So, I tried rebooting the MacBook with Option+Command+R keys. Remember my first step of getting into the macOS Utilities was by pressing COMMAND+R keys, Apple seems to suggest that there are other options as per above. ** If you haven’t already updated to macOS Sierra 10.12.4 or later, Option-Command-R installs the macOS that came with your Mac, or the version closest to it that is still available. * If you’re selling or giving away a Mac that is using OS X El Capitan or earlier, use Command-R to make sure that the installation isn’t associated with your Apple ID. Install the macOS that came with your Mac, or the version closest to it that is still available. Upgrade to the latest macOS that is compatible with your Mac. Install the latest macOS that was installed on your Mac, without upgrading to a later version. Turn on or restart your Mac, then immediately hold down one of these combinations: MacOS Recovery installs different versions of macOS depending on the key combination you use while starting up. Repeat again and again to reinstall, no go.īefore I went to bed, I google and then read again the details on Apple website: Start up from macOS Recovery Went home, brought the MacBook Pro with me home to continue troubleshooting. I even tried “Restore from Time-Machine”, but can’t. Google again and again, my steps were correct. Tried two different locations / WIFI, still same. I have connected to the internet correctly. I tried “Reinstall macOS” but it just won’t allow me to download the macOS installation files. Make sure you backup any important files first). (there is no turning back once you do this. Select Erase the disk and all data will be deleted.

You will be presented with the macOS Utilities screen. Restart and at the same time press COMMAND + R keys. Yes, a simple search revealed that you can do a complete clean install of your MacBook.

I bought a Seagate 1TB portable disk to backup the data for him using Time Machine (around 500GB of space required). Then the nightmare came…or should I say…learning process. Of course, because I asked about it, then only he is willing to sell to me. He prefers using his iPad Pro for his work, so selling this MacBook Pro away. I bought it from a friend at a good price. Why “New”? Because it is not an new unit but pre-owned. Why “New”? Because it is actually a pre-owned unit from a friend. I have owned a MacBook, MacBook Air, but never a MacBook Pro. Should I say…this is my FIRST MacBook Pro.

Mac os sierra reinstall