While you can upgrade to OS X from the App Store - it may take a long while. The best way to go is local clean install! Or what if you need to upgrade multiple Macs?

Just plug in the flash drive and let it do its job – quick, efficient and without any interruptions!

To boot from the flash drive – restart your Mac, immediately after it starts booting hold Option / Alt key for the boot option. Select “Install OS X Yosemite” or it may appear as “OS X Installer” or “EFI Boot” from the menu and boot to the flash drive. Once there – you can use the Disk Utility to wipe clean your hard drive (please make sure you backup your data before doing that), you can also run repairs and recover your system if needed. Follow the wizard instructions to install the OS X.

Compatible Apple computers with OS X Yosemite:

·  iMac (Mid 2007 or newer)
·  MacBook (Late 2008 Aluminum, or Early 2009 or newer)
·  MacBook Air (Late 2008 or newer)
·  MacBook Pro 13-inch (Mid-2009 or newer)
·  MacBook Pro 15-inch (Mid/Late 2007 or newer)
·  MacBook Pro 17-inch (Late 2007 or newer)
·  Mac mini (Early 2009 or newer)
·  Mac Pro (Early 2008 or newer)
·  Xserve (Early 2009)

System requirements:
·       2 GB or more of memory
·       8 GB or more of hard drive space 

You can also use this flash drive as a repair tool, as it includes:

• Disk Utility
  • Verify/Repair Permissions
  • Verify/Repair Drive
  • OS X Recovery
  • Firmware Password Utility
  • Terminal
  • System Information
• Restore From Time Machine BackUp (if setup initially)

You are purchasing a new flash drive (only used to load the OS X)!