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#Imac using os x boot disk to wipe drive mac os#
#Imac using os x boot disk to wipe drive install#
#Imac using os x boot disk to wipe drive password#
#Imac using os x boot disk to wipe drive mac#

(If you happen to own a Mac with a disc drive, consider creating a DVD backup of Lion. The app will give you the option of creating a bootable drive out of either a DVD or a USB keychain.

#Imac using os x boot disk to wipe drive install#

Start the Lion DiscMaker app with your USB flash drive plugged in and with the Lion install file sitting inside your application folder. Lion DiscMaker makes this part of the process a snap. You have been warned! Creating Your Bootable Drive Afterwards, you can use the step-by-step setup as you normally would to install and setup OS X 10.10 Yosemite.Now, before you start formatting your drive, back up anything currently on your flash drive that you’d like to keep–because this process will completely erase the contents of the USB drive and rewrite it with a copy of Lion. To do that, you need to restart the Mac, and, right after that, press the Option key, and choose to boot from this drive. Now that you have a bootable OS X 10.10 Yosemite USB drive, you may want to install the operating system on your Mac. Like I mentioned before, this depends largely on the speed of the USB drive that you have, so, ideally, you should use the fastest one available, in case time is of the essence. Unlike the official tool baked in OS X 10.10 Yosemite, DiskMaker X lets you know how long the process takes.

#Imac using os x boot disk to wipe drive password#

Type in your user password when requested.

If requested, from the given list, select the USB drive you are using for the process, and then select Choose this disk.

(Select Another kind of disk if you want to use something else).

Select Use this copy to use the Install OS X Yosemite app from the Applications folder.

(You may get a warning due to its beta status.)

Open DiskMaker X and select Yosemite (10.10).

If you wish to use DiskMaker X to create the bootable OS X 10.10 Yosemite USB drive, here is what you need to do: At the time of writing this article, however, it is still in beta, which means that there is a chance that you may run into bugs. Like I mentioned earlier, it works with previous incarnations of the operating system the version of DiskMaker X that is compatible with OS X 10.10 Yosemite also works with OS X 10.9 Mavericks and OS X 10.8 Mountain Lion, according to the official page. It automates the process of creating a bootable OS X 10.10 Yosemite USB drive, but it still requires you to know which options to select. The More User-Friendly (Third-Party) ToolĭiskMaker X is the more user-friendly tool for the job. Rest assured that it will, usually in less than half an hour (the time element mostly depends on the speed of the USB drive that you are using - the faster it is the better).

But, because it is basically barebones, the tool does not provide any indication as to how much time is left until the process completes. It is virtually bulletproof, gives consistent results, and works without problems.

Type in your user password, when required, to start the process.īased on my experience, this is the best method of creating a bootable OS X 10.10 Yosemite USB drive.

Use (paste) the following command: sudo /Applications/Install OS X Yosemite.app/Contents/Resources/create installmedia -volume /Volumes/Yosemite -applicationpath /Applications/Install OS X Yosemite.app -nointeraction.

Open Terminal (it is found in the same folder as the Disk Utility app).

This can be done from the Erase tab within the app make sure that there are no multiple partitions (turn to the Partition tab to verify and correct this).

#Imac using os x boot disk to wipe drive mac os#

Using Disk Utility (it is found in Other under Launchpad), format the USB drive as Mac OS Extended (Journaled), and name it Yosemite.

Now, let's move on to the actual process. (The third-party tool will work, however.)

It may allow you to create a bootable OS X 10.10 Yosemite USB drive using prior iterations of the operating system, but I have not yet tested this and, therefore, there are zero guarantees that it will work. To use this tool, Apple indicates that the Mac that you use it on must be running OS X 10.10 Yosemite.