Mac OS X Yosemite Clean Install **Updated**

This is a clean install done right, instead of making it complicated, showing files, hiding files, mounting Base Systems DMG, etc. this is just a copy and paste command into terminal.

Run this in terminal and wait about 20 minutes (NOTE: if this command does not work due to Youtube screwing up the format, click on my dropbox link, download the document with the text, copy and paste that into Terminal)

sudo /Applications/Install OS X –volume /Volumes/Untitled –applicationpath /Applications/Install OS X –nointeraction

You should see something like this:

Erasing Disk: 0%… 10%… 20%… 100%…
Copying installer files to disk…
Copy complete.
Making disk bootable…
Copying boot files…
Copy complete.

You can then boot up from the USB by holding down the option key, then install the OS from the USB.


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  1. Thanks for the video, but Yosemite isn't on apple store any more, do someone happens to know where to find Yosemite?

  2. 2:20 "wait about 20 Minutes" ??? or Seconds?

  3. It keeps saying command not found

  4. I have having issues with the screen freezing, slowing down, and virus, spyware. So, right after running this super system utility for MAC “macvo unique only” (Google it) I can see a great improvement in its functionality. It helps to scan for problems, boost performance and maximize speed! Aside from scanning malware, it can also get rid of them.

  5. Yosemite isn't on apple store any more … arghhhhhhh

  6. I've been studying Mac speed ups and discovered a fantastic website at Mels Speed Method (check it out on google)

  7. would this delete my files (pictures, apps, etc)?

  8. Thank you for this video. I'm not a mac guy and this helped tremendously. It was exactly what I needed… step by step guide for a clean install. I just wish I had found it sooner =/

  9. Is there a way to restore all your old files after youve done the fresh install using time machine?

  10. very helpful! thank you. Also, thank you for your service!

  11. Thank you! Flawless instructions!

  12. I have made my USB installer and after holding option I click on the OS X Yosemite installer, it then loads up but to the language selection, not disk utility. Is there a reason for this? Thanks.

  13. i did all what you said and i get all the way up to where it downloads but as a few seconds go by i hit an error saying "the copy of install os x yosemite app can't be verified. it may have been corrupt or tampered with during download" mind you i didn't mess with it at all and i did get the software from the mac app store

  14. Thank you for your video. Before I saw this video I already made the usb installer and I used command from this site which is slightly different than yours.

    Will this cause a problem? or should this be okay?