How do I clean install Yosemite?

Discussion in 'OS X Yosemite (10.10)' started by Swagged, Oct 17, 2014.

  1. Swagged macrumors regular

    Joined:
    Nov 14, 2011
    Location:
    Gotham City, New York
    #1
    Could I just restart my mac and hold shift + Ror whatever and recover yosemite from there?
     
  2. Swagged thread starter macrumors regular

    Joined:
    Nov 14, 2011
    Location:
    Gotham City, New York
  3. michelg1970 macrumors regular

    michelg1970

    Joined:
    Jul 26, 2011
    Location:
    Gouda - The Netherlands
    #3
    I wanted to do the same thing and ended up googling (make usb installation yosemite -or something like it) on the subject.

    I made external USB drive (i used a hard disk but you can also use USB thumb or even SD card)

    There are 3 methods:

    the lion disk maker tool (didn't work for me)
    the terminal command way (didn't work for me)
    the disk utility way (worked for me)

    I ended up with an external hard drive that was able to boot an external Yosemite installation and from there i was able to clear all my hard drives and do the full clean install.

    Now my rMBP is running very niceeeeeeeeee. Wanted to do clean install coz I installed all the betas over and over again and wanted to start from scratch.

    Good luck!

    PS you can only do internet recovery if you had already installed yosemite (final version) other wise it will revert to your previous eligible installation (mavericks)
     
  4. TigerMSTR macrumors regular

    Joined:
    Sep 30, 2014
    #4
    Couldn't you create a second partition to install Yosemite on, and once the installation is complete delete the Mavericks partition.
     
  5. Swagged thread starter macrumors regular

    Joined:
    Nov 14, 2011
    Location:
    Gotham City, New York
    #5
    Ok I installed Yosemite (final version) over my Mavericks so I can simply just do an internet recovery instead of having to create an external usb or use external drive?
     
  6. Weaselboy, Oct 18, 2014
    Last edited: Oct 18, 2014

    Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #6
    You should now be able to command-r boot to recovery then erase Macintosh HD in Disk Util then reinstall. Since you are booted from the Yosemite recovery partition, that would get you a clean install of Yosemite.
     
  7. Swagged thread starter macrumors regular

    Joined:
    Nov 14, 2011
    Location:
    Gotham City, New York
    #7
    What?
     
  8. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #8
    I had a typo in there (not/now)... since you already installed Yosemite it should have created a Yosemite recovery partition. If you command-r boot to that you can erase the Yosemite partition and reinstall. That will get you a clean install.

    Sorry about the confusing typo. :eek:
     
  9. DisplacedMic macrumors 65816

    Joined:
    May 1, 2009
    #9
    ?
     

Share This Page