If your OSX Installation won’t  start it may be important to have an USB Stick with a full installation of OSX.

Its easy to create one.

You will need an USB Device with more than 16 GB storage and an IntelMac with OSX 10.7 and newer.

After you achieve all requirements you  have to follow a few steps.

First you will have to format your USB Device.

Insert the USB flash drive into your Mac.

Launch Disk Utility, located at /Applications/Utilities/.

Select the USB flash drive device.

Click the Partition tab.

Select 1 Partition from the Volume drop down list.

Enter a name for your USB Device.

Select Mac OS X Extended (Journaled) from the dropdown menu.

Click on Options.

Choose  GUID Partition Table from the list of available partition types and click OK.

IMPORTANT

All Data will be deleted after you proceed!

If you’re sure to delete all Data please click Apply.

A message box opens and want that you will erase all data from the device.

After this click on Partition.

Quit Disk Utility.

Now you have to enable Ownership of your USB Device.

To do this you will have to open the Finder select the USB Device on the left site.

Now open the Information Windows of the Device by selecting it and press CMD + I

 

Now click on the icon in the right bottom corner in the Sharing and Permissions section and enter your admin password.

osxownership

Now remove the check mark from Ignore ownership on this volume.

Close the Information Windows.

Now the USB Device will be listed as a volume in the Installation Window.

Reboot your Mac, press the Option Key after you hear the start sound and choose your Recovery Partition to install OSX on your USB Device.

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