What happens when I restore my El Capitan mac to factory settings?

I currently have El Capitan and wanted to reinstall my Windows partition because I needed more space, but after deleting the partition and to set up the new partitions, I came across some problems during the installation of windows, in which he said that the drive was GPT partition or something like that. I've lost 3 days trying different solutions in various sites, including this and have yet to make it work so I decided to just restore my Mac for its original OS and reinstall my Windows then just upgrade to El Capitan again.

My questions are:

1. it would be the first time that I do this, but from what I've read and watched, what are the exact steps to restore my mac to its factory settings?

a. restart the Mac.

b. hold the cmd + r

c. Select utility disk under the window utility for OS X

d. Select the partition (Macintosh HD)

e. clear it for OS X (journaled)

f. utility disc close

g. click on reinstall OS X under OS X utility window

h. click on continue

i. choose my drive

j. click on install

2. what would be the OS X installed on my newly formatted partition? Would it still El Capitan (my current operating system before formatting) or Mountain Lion (the operating system original on my Air mid-2013)?

recovery of the Internet will reinstall the last interaction of the operating system that was available

the air of 2013 came with 10.8.4 when he left, internet recovery restore 10.8.5

No, you do not have an option to choose something else.

Tags: Mac OS & System Software

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