OS X 10.8 Mountain Lion will be offered exclusively through the App Store, familiar territory for Apple since OS X Lion was provided the same way. Thankfully it’s still possible to create a bootable OS X 10.8 Mountain Lion installer from any USB drive, be it a flash key or external hard drive. Creating bootable Windows 10/8/7 USB is not a complicated thing. Bootcamp will automatically locate the.iso file in your Downloads folder.
Creating an OS X 10.9.X Mavericks bootable installation on a USB flash drive.
Mavericks-usb.txt
![Os X 10 8 Install Usb Raw File Os X 10 8 Install Usb Raw File](/uploads/1/2/5/8/125869046/328920761.png)
Download a copy of Mavericks from the Apple Store. It will save in your /Applications directory and will open once the download is complete. Just quit the installation. If you run the installer it will delete itself so move it to keep a copy. |
Format an 8G+ (needs about 6G of space) USB stick with the 'Mac OS X Extended Journaled' format and leave it named 'Untitled' but be sure that you do not have another volume named 'Untitled' or the next step could erase something! |
Open the Terminal app and run the following command. This copies the resources over to the USB stick and makes it a bootable drive. Check the path, if you moved the file correct the paths. |
sudo /Applications/Install OS X Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install OS X Mavericks.app --nointeraction |
You should see something like the following, the 'Copying installer files...' will take about 20 minutes with not progress indication. Just wait for it. |
Erasing Disk: 0%... 10%... 20%... 100%... |
Copying installer files to disk... |
Copy complete. |
Making disk bootable... |
Copying boot files... |
Copy complete. |
Done. |
You can then boot up from the USB by holding down the option key, then install the GM from the USB. |
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