Apple's decision to change only digital distribution there are negative points - if there are several Mac, the Internet user must download the installation file in each of the teams. To resolve this problem, you can create bootable USB disk with Sierra macOS 10.12.
- USB memory of at least 16 gb.
- The image macOS 10.12 Beta Installer Sierra downloaded from the site developers or the Mac App Store.
- The team with the OS X on El Capitan.
If everything is ready, you can begin.
Creating a USB flash boot drive with Sierra macOS
Step 1: Make sure you have the equipment in the folder is a file "Install Preview.app 10.12 Developer".
Step 2: Connect the USB drive to your Mac must take into account that the disk is formatted, therefore, it should not be important data..
Step 3: Rename the USB memory as SierraInstaller (or any other name without spaces).
Step 4: Open a Terminal in the Utilities folder and run the following command:
sudo / Applications / Install Developer Preview.app/Contents/Resources/createinstallmedia -volume 10.12 / Volumes / SierraInstaller -applicationpath / Applications / Install && 10.12 Developer Preview.app -nointeraction say Done
Step 5: Enter the password of your account, after which the process of creating bootable USB drive with Sierra macOS start.
Through 10-15 minutes from Terminal finish creating the unit.
"Erasing Disk: 0% ... 10% ... 20% ... 30% ... 100% ...
Copying files to disk installer ...
Making boot disk ...
Copying boot files ...
Step 6: Closing the Terminal.
Step 7: Then restart the Mac by installing USB fleshkoy, hold in the Alt (Option) key.
Step 8: You can proceed to the installation of macOS Sierra!
It is worth noting that not all existing users of Mac OS X El Capitan able to go macOS Sierra. minimum operating system requirements, outperforming the predecessor. From the list of compatible they are lost iMac 2007 and 2008. They will not have access to the platform of the owners of 13-inch MacBook 2008 and 2009. The platform "is not thrown" Mac Pro 2008 and 2009 and 2009. Han Mac mini behind and holders of the MacBook Pro 2007, 2008 and 2009. the complete list macOS Sierra compatible models can be found at this link.