Apple Mac OS X Lion is now available to general public. The Mac OS X 10.7 Lion is available for installation only from the Mac App Store. This guide will teach you how to create a bootable USB Flash drive of Mac OS X Lion 10.7 and install Lion from USB, rather than downloading it from Mac App Store on each and every Mac computer you own.
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Despite of numerous great and awesome features, Mac OSX Lion 10.7 has a big flaw that it is not available in bootable USB or DVD right now. Every time you you want to install OSX Lion on a Mac you will need to download it from Mac App Store all over again. Thanks to the bootable USB method which eliminates the downloading of Mac OS X Lion for each and every device and lets you install Mac OS X Lion on any Mac.
Note: An official bootable USB of Mac OSX ion 10.7 will be available in August 2011 for $69. This method not only eliminates the wait for the official, it also saves you $40 (Mac App Store version costs $29).
Creating a bootable Mac OS X Lion 10.7 USB Flash drives requires medium level Mac knowledge, however, by following these simple instructions even a beginner should be able to install Mac OS X Lion via USB Flash Drive.
Why make a bootable Lion USB drive?
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- You can perform a clean OS X Lion installation with the bootable USB drive
- The bootable Lion USB drive becomes a recovery disk with Disk Utility access, access to Time Machine backups, re-installation, and all other Recovery HD partition features
- You will have external media to recover and reinstall Lion in the event of total drive failure or some other catastrophe
Mac Os X 10.7.5 Lion Bootable Usb For Intel Pcs Free
Required Stuff
Bootable Usb Windows 10
- Purchase and Download Mac OS X Lion from the App Store
- 4GB USB Flash drive (8GB recommended)
If you have arranged the above mentioned items, simply follow the detailed guide below to create a bootable Mac OS X Lion 10.7 USB Flash Drive…
Step 1 – Locate the Lion InstallESD.dmg file
Bootable Usb Creator
Once the Lion downloading is complete, go to the Applications folder and find the Install Mac OS X Lion.app file you just downloaded;
Right click on the Install Mac OS X Lion.app file and select Show Package Contents;
Now go to Contents > SharedSupport directory. Locate the file named: InstallESD.dmg and copy it on your desktop.
Step 2 – Format The USB
- Before formatting, If you have any data on your USB drive then save it;
- Plug the USB flash drive into your Mac;
- Launch Disk Utility from Applications;
- Select the plugged USB from the Left pane on the Disk Utility and click on Partition tab;
- Select 1 Partition from the Volume Scheme dropdown menu;
- Input a name for the USB and Choose Mac OS Extended (Journaled);
- Now click on Options button at the bottom. Select GUID Partition Table and click OK. Now click on Apply at the bottom right to start formatting.
Step 3 – Make Mac OS X Lion Bootable USB
- Double-click on InstallESD.dmg (that you copied onto your Mac desktop) to mount the Lion disk image (mounted InstallESD.dmg should appear on Disk Utility application and desktop);
- Select the plugged USB from the Left pane on the Disk Utility and then go to Restore tab;
- Click and drag the IMac OS X Install ESD from the left pane and drop it in the Source field;
- Then Click and Drag the USB drive from the left pane and drop it in the Destination field;
- Make sure you have chosen the right USB drive, you don’t want to format the wrong drive and then click on Restore button;
- This will restore the Lion 10.7 image to the USB Flash drive. Wait for the process to complete.
Step 4 – Boot Mac OS X Lion from USB
- Reboot your Mac with the USB drive plugged in.
- Hold down the alt/Option key on your keyboard when you hear the OS X start-up sound.
- Choose the USB Flash Drive from there to boot.
- Now follow the on screen instructions to install OS X Lion.
You can follow the Step 4 to install Lion on other Macs with the bootable USB you just created.
[via Lifehacker]