- Do you want upgrade to mac os 10.8?
Process of creating Mountain Lion Install USB looks like OS X Lion USB creating process.
- How to update mac os x?
To make bootable Mountain Lion install USB you need OS X Mountain Lion Install ESD file.
Download Install OS X Mountain Lion.
Erase your USB Flash Drive with Disk Utility. Find and mount OS X Mountain Lion Install ESD.dmg by double-click. After this restore Installation File to your USB with Disk Utility.

You CAN {Download}
OS X Mountain Lion 10.8.5.dmg
Works fine.
Thank u.
great, thanks A+
where is the download link?
You’ll get after donation
i can not download dix this
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