Os X Yosemite How To Correctly Format

The best thing to do is download it once and create a bootable install USB drive from the file for all of your Macs.

If you want to install first and then make a bootable drive, make a copy of the installer app in another location so you can access it later.

Worst case scenario is downloading the large file again from the Mac App Store, but then why make a bootable drive.

To start out, download the newest version of DiskMaker X from its website.

Currently, thats the Yosemite Beta version.

Update: the public Yosemite version is out now, and you can download it from here, here, or here.) Once download, open it up and select Yosemite Beta or Yosemite 10.10 (depending on the version youre using) to start the process.

Youll be warned about it being a beta software, but once you get passed that, make sure to select Use this copy to use the installer app it found in your Applications folder.

If you have more than one installer like I do, youll want to make sure to do it manually.

Im using a 16 GB drive, but I still chose the An 8 GB USB thumb drive option.

Then just follow the rest of the prompts to start the disk-making process.

It could take anywhere from 15 minutes to to 45 minutes to finish, depending on your USB flash drive.

If its more toward the latter, you might get a AppleEvent timed out error, but it should still work, according to the developer (it worked for me).

Just make sure your USB drive is already formatted correctly before proceeding.

Os X Yosemite How To Correctly Format

To see how to correctly format your USB drive, please see Step 1 below in the The Hardest Way section.

With your USB drive ready to go, open up Terminal and type (or copypaste) the following command.

Type in your admin password to continue and the Enter again.

You wont visibly see your password typing, but its happeningbelieve me.) Now just wait.

This could be fairly quickly or very long, depending on your system and USB drive.

Select the USB drive (not the partition) Go to the Partition tab Change the Partition Layout to 1 Partition Rename it Yosemite (or whatever you want) Select Mac OS Extended (Journaled) as the Format Click the Options.

First, we need to unhide the files located in this newly mounted OS X Install ESD image.

And dont worry, well be undoing this at the end of this guide.

Open the Restore tab Drag and drop Yosemite down to the Destination path Drag and drop BaseSystem.dmg to the Source path Hit the Restore button Then, on the following prompts, click on Erase to initiate the restore process, then enter in your admin password and hit OK to proceed.

Afterward, youll have to wait a few minutes until it remounts.

Once it does, you should see the OS X Base System window open.

System is the folder were looking for, so proceed to the next step.

A new window should pop up, and once it does, open the Installation folder.

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