![osx mountain lion install disk osx mountain lion install disk](https://i.ytimg.com/vi/RkTjUrDaSbE/maxresdefault.jpg)
Advantages: doesn't require any advance preparation as above, you can boot from this and recover from Time Machine and/or reinstall Lion (if you have enough time). However, that's only the bare minimum if you plan to install Mac OS X for day-to-day use, I recommend allocating at least 50 GB of space.
![osx mountain lion install disk osx mountain lion install disk](https://www.thewebernets.com/wp-content/uploads/2012/08/finished.jpg)
Use Lion Internet Recovery (per BJ Homer's answer). Also, OS X Mountain Lion takes up about 10 GB of space on its initial installation, so the computer where you install Mac OS X must have at least 10 GB of space in its hard drive.Disadvantages: you must create this before removing the old HD, it requires an 1GB or larger flash drive, and since it won't include the full Lion installer you'll need an internet connection (and 4GB worth of patience) to reinstall Lion with it. Advantages: you can boot from this and recover from Time Machine (and/or reinstall Lion if you have an internet connection and enough time). Description Mac OS X Lion 10.7.
OSX MOUNTAIN LION INSTALL DISK FOR MAC OS
Mac OS X Lion 10.7.2 offline installer complete setup for mac OS with direct link.
![osx mountain lion install disk osx mountain lion install disk](https://appducate.com/wp-content/uploads/2012/12/mountain-lionusb1.jpg)
OSX MOUNTAIN LION INSTALL DISK FOR FREE
Create a Lion Recovery drive (per my answer above) using an existing Lion system and Apple's Lion Recovery Disk Assistant. Mac Os X Lion Installer Free Download Mac Os X Mountain Lion Download Mac Os X Lion Antivirus Free Os X Version Mac For Free Mac OS X Lion 10.7.2 dmg for mac free download full version.Disadvantages: you need to download the installer first (around 4GB), and it requires an 8GB or larger flash drive. Advantages: just like the purchased installer, you can boot from this and reinstall Lion and/or recover from Time Machine without needing an internet connection. Create your own Lion installer drive (per Diago's answer) using a downloaded Lion installer app.Select this option and click Continue, and the OS X installer launches, letting you install Mountain Lion on any supported drive or volume. Advantages: you can boot from this and reinstall Lion and/or recover from Time Machine without needing an internet connection. Reinstall OS X: Set up and install a new copy of OS X. Buy a Lion installer (USB drive) from Apple.There are a number of similar options that can be a little confusing, so here's an attempt at clarifying their differences: Then, after you replace the HD, you can boot from that and use it to reinstall Lion and/or recover your system from Time Machine. I'll add yet another option to the list: before you remove the old HD, use the Lion Recovery Disk Assistant to copy its recovery partition to a flash drive.