Apple OSX 10.11 El Capitan Bootable Usb Installer RECOVERY
How to Clean Install OS X El-Capitan on Your Mac
Step 1: Ensure the bootable USB flash drive is plugged into your Mac and restart the computer. As soon as the start-up chime plays, press the Option key (Alt).
Step 2: Choose the USB drive on the start-up drive selection screen and hit Enter/Return on the keyboard.
Step 3: Wait until the El-Capitan installer appears on screen. This could take a few seconds or minutes.
Step 4: Click on Disk Utility and then hit Continue.
Step 5: Click on Macintosh HD from the left hand-side pane and then hit Erase tab on the top-right portion of the window. Leave all the settings at their default values and then hit Erase button at the bottom right. This will wipe all files stored on your startup hard drive.
Step 6: When the erasing process is complete, return to the first screen where you selected Disk Utility. Now click on Install OS X and then hit Continue.
Step 7: Choose the Macintosh HD partition you erased in step 5 and then click Install.
for the following computers:
MacBook (Early 2015)
MacBook (Late 2008 Aluminum, or Early 2009 or newer)