dual boot with lion and mavericks?

iainwh wrote:

so, I'm thinking of using my external hard drive to try and install mavericks onto and Dual boot my MBP.

is this possible?

Yes it's possible as long as your Macbook Pro can run OS X Mavericks. Have you checked the OS X Mavericks Requirements to be sure yours qualifies? If it does, then you can download OS X Mavericks from the App Store and point to your external drive to install it on. To boot into OS X Lion or Mavericks you can either change the Startup Disk each time or press the Option/Alt key at startup to select one or the other.

One suggestion, when you download OS X Mavericks and BEFORE you click on the Continue button to start the install, save the Install OS X Mavericks.app file located in your /Applications folder to another folder or external drive. You can use this to create a USB thumb drive (8GB) Mavericks installer using DiskMaker X so you don't have to download it each time your want to reinstall.

Good luck!

Don't forget to save the Install OS X Mavericks.app file in your /Applications folder. It's a nice thing to have to create a USB thumb drive installer and also use to recreate your Mavericks Recovery HD using the Recovery Partition Creation Tool.

iainwh wrote:

Hi Mate,

I'm currently backing up my hard drive and then I'm going to download mavericks.

After the download completes you get this screen:

Quit without pressing the install button. Go to the applications folder and make a copy of the installer, move the copy out of the applications folder. When the copy is done doubleclick the installer in the applications folder.

Just choose Quit, from the installer menu (top left)

Lol.. too funny. You'll be fine.