I have the following MacBook

MacBook Pro (Retina, 15-inch, Late 2013)

I want to format the hard-disk and reinstall the Mac so that I have a clean system. I tried to boot up with CMD + R and reinstall OS. Looks like it didn't wipe out the hard disk and just install the OS again.

Please let me know whats the best way forward. Read a lot of articles are they are confusing. Some say it will get into Internet recovery mode etc.

1 Answer 1


Boot up holding down Command R, as you did, but go to Disk Utility (under the Utilities menu) and Erase the disk before installing the OS.


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