Note that this can be a USB flash drive, a small external hard disk drive or solid-state drive it makes no difference. A USB drive (preferably USB 3.0) with a capacity of at least 8GB. Download the InstallMacOSX.dmg file by clicking on the OS X El Capitan 10.11 link in the Apple document 'How to get old versions of macOS'. Below are the steps needed to create an USB flash drive El Capitan bootable installer.In the left-hand menu, right-click on your USB device (which should appear under the External heading) and choose the Erase option. Open up Disk Utility, click the View option on the main menu bar, and ensure that Show All Devices is selected. This will erase the contents of your USB stick, so make sure you dont have anything valuable on there. The OWC Dual USB Flash Drive or LaCie Porsche Design USB 3.0 Drive is perfect for this!Need to restore a Mac or creating a hackintosh without a apple hardware, you just need a bootable USB drive of mac OS, and to create one you just need a USB.Double-click on the Resources folder. Right-click on the downloaded installer application (“Install macOS Sierra Public Beta”), then select Show Package Contents (see image below).Right-click, select “Show Package Contents” Dd if/path/to/Hackintosh-Sierra-Zone-Uncompressed.dmg of/dev/sdb bs1M.How to re-download the macOS Sierra Public Beta installer file Guess what? No typing of complex directory paths is required. We’re going to run the “createinstallmedia” file in Terminal. The easiest way to do this is to press Command-Space Bar to open Spotlight, then type in “terminal” (without the quote marks)and press enter. Now, launch the Terminal application. Find the file named “createinstallmedia” (see image above)
Making A Path For Usb On Sierra Download The InstallMacOSXType it in, then press Return. You’ll be asked to enter the administrator password for your Mac. To execute that command, press Return on your keyboard. Terminal will display “Done” and then the Terminal prompt when complete (see below). The last part of the process makes the disk bootable. Depending on the capacity and speed of the disk, it may take a while for the installer files to be copied. The new name of the disk is “Install macOS Sierra Public Beta”. To continue, type Y (for yes), then press Return (see image below).Password is entered, and to erase the disk and install Sierra, type Y and press returnThe disk is erased and you will see the desktop icon for it disappear as it is renamed. Use the arrow keys on your Mac to select the one named “Install macOS Sierra Public Beta”, then press Return (see image below).Press the Option key at startup to display all drives/partitions. At one point, you’ll be greeted by all of the drives and partitions that are associated with the Mac. Plug the USB drive into the Mac, then restart or turn on the Mac on which you wish to install macOS Sierra Public Beta while holding down the Option key on the keyboard. OK, this is really easy. If you have an available Mac that you can feel good about erasing, installing beta software, and then re-erasing if necessary, then feel free to do so. How do we go about doing that? Remember the caveat from our earlier posts — do NOT install a beta operating system on any Mac that is used for daily work. Dr cleaner pro mac photos appUntil then, your best bet during the beta testing of Sierra is to use this slightly more difficult method.UPDATE (7/27/16): Reader Ben Slaney noted via Twitter that there is a free Mac app named “Install Disk Creator” available that automates the process so that you don’t need to use Terminal. At that time, another post will be published showing how to create a macOS Sierra boot drive with DiskMaker X. However, it won’t be ready for macOS Sierra until this fall.
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