Fresh install OS X on a rMBP & other questions

[GT1999]

I have last year's model MBP, it came pre-loaded with 10.8.2 and I've upgraded to 10.8.3.

It did not come with install media (why would it with no optical drive, anyway). When I went to the Apple store to purchase some accessories, the rep told me to do a clean install, to get the OS from the app store. 10.8 costs $20 I believe -- why do I have to pay again for something that I purchased and to do a clean install?

Also, if I want to do bootcamp, will that mean I'll have to purchase the OS for $20 and then re-partition my drive?

I'm getting a MacBook Pro non-retina at work and was planning to bootcamp, and also use Parallels which they are purchasing for me.

Thanks in advance

 

[Mixolydian]

You don't. Reboot to the recovery partition by holding down Command-R (I think) when starting up the computer. From there you can reinstall the OS.

 

[lenablue]

I just tried install OS X on USB flash drive. Having said that, I recommend that you customize the software packages that OS X will install. Because of the limited space on the USB flash drive, you will need to remove any printer drivers that you don’t use, as well as all of the extra language support that OS X installs. Don’t worry if this sounds complicated; the installation instructions I link to here are step-by-step guides and they include information on customizing software packages.

 

[Syrome]

You don't. Reboot to the recovery partition by holding down Command-R (I think) when starting up the computer. From there you can reinstall the OS.

This is exactly what I would have said. There is no need to go out and purchase another round of OSX every time. Simply reinstall off of the recovery.