Extract and burn to DVD or create bootable USB from OS X Installers

root's picture

How to extract OSX Lion image and burn it to DVD:
If you already installed Lion, you will have to download again the package from AppStore so open it while holding Option key (ALT) button and from "Purchases" tab, open "OS X Lion" link again while pressing Option key (ALT).
Now, let's assume you have the Lion package in the right place.
Navigate to /Applications/Install\ Mac\ OS\ X\ Lion.app/Contents/SharedSupport and you will have there InstallESD.dmg.

user@osx: ~$ cd /Applications/Install\ Mac\ OS\ X\ Lion.app/Contents/SharedSupport 
user@osx: SharedSupport $ ls -la
total 7411920
drwxr-xr-x   4 root  wheel         136 Dec 21 23:57 .
drwxr-xr-x  12 root  wheel         408 Dec 21 23:57 ..
-rw-r--r--   1 root  wheel  3794414600 Dec 21 23:56 InstallESD.dmg
-rw-r--r--   1 root  wheel      484418 Oct  6 15:59 OSInstall.mpkg

Burn this image to a DVD and you will have a bootable OS X Lion installation disk!

How to extract OSX Mavericks image and create USB stick bootable image:
1. The destination USB stick should be called Untitled and formatted as Mac OS Extended (Journaled).
2. Run the following command - replace /path/to with yours - output following:

flmbp:~ root# [color=red]/path/to/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /path/to/tmp/Install\ OS\ X\ Mavericks.app --nointeraction[/color]
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.

3. DONE!

Thou shalt not steal!

If you want to use this information on your own website, please remember: by doing copy/paste entirely it is always stealing and you should be ashamed of yourself! Have at least the decency to create your own text and comments and run the commands on your own servers and provide your output, not what I did!

Or at least link back to this website.

Recent content