Clean Mountain Lion install without USB & drive

[kodeman53]

Looks like Apple has an opportunity in their next update to make all options clearer.

Apple will never be able to make things clear to members of the Church of CleanInstallogy.

 

[ivoruest]

Hopefully Apple will do.

 

[PEN10k]

hi all

Just wanted to tell that on Macs with the internet recovery function, it's posible to to a complete clean Mountain lion install already.

On my air i bought and install mountain lion from store.
After install was complete, booted into the recovery, formated with diskutility, and it could install Mountain Lion over internet

EDIT: This is not using the Internet recovery funtion. This is just using the Recovery Partition

I can't acces the security options, when I want to erase the HD?

 

[Weaselboy]

I can't acces the security options, when I want to erase the HD?

I assume you have an SSD? Disk Utility blocks secure erase of SSDs because it is bad for the SSD.

You can either do a regular erase, or if you are really that concerned about clearing off your data before selling a machine you can encrypt the drive with Filevault2 and then erase it. Nothing will be recoverable from that.