Mac Os X Lion Usb Image Download Updated

Medina Himetch – April 06, 2022

Mac Os X Lion Usb Image Download

Make a Bootable mac USB Installer from a USB Flash Bulldoze

I'yard going to walk through the procedure of making a bootable Mac Bone X ten.vii Lion installation drive out of any USB flash drive cardinal. This is similar to the process of making a bootable Lion installer DVD, but I prefer a USB flash drive considering it's faster, smaller, and I have a Mac Volume Air then an installation DVD isn't too useful for me.
This is pretty easy to do, but I take made the walk through as simple every bit possible with plenty of screenshots, so just follow along the instructions.

Requirements
A Mac with Mac Bone Ten 10.half dozen.8 and then you tin can download and access King of beasts
8GB+ USB flash fundamental drive
Download Mac Bone X Lion from the Mac App Shop
OR Download Direct
Got all that? Skilful, let'southward proceed.
We're going to assume you already take Mac Bone X Lion downloaded from the App Store, if yous don't, practise that first. If y'all have anything stored on the USB flash bulldoze you're going to lose it, and so exist prepared for that and back it upwardly.
Start we are going to locate the Panthera leo InstallESD.dmg file and mount it:
Navigate to your applications folder
Right-click (or control-click) on the "Install Mac Bone X Panthera leo.app" and select "Show Bundle Contents"
Open the "Contents" directory and and so become into "SharedSupport"

Double-click on "InstallESD.dmg" to mount the Panthera leo disk image onto your Mac desktop, it volition show up similar the image beneath

Side by side, nosotros format the USB flash drive, this will become the bootable Lion installer:
Plug the USB flash drive into your Mac
Launch Disk Utility
Select your USB drive from the left side of Disk Utility, then click on the "Erase" tab
Cull "Mac Os Extended (Journaled)" as the Format, and name the USB fundamental what you desire
Click on "Erase" to format the USB bulldoze

Now that the USB flash drive has been formatted to the advisable filesystem, we are going torestore the previously mounted InstallESD.dmg file to the bare USB bulldoze.
Right-click on the USB drive in Disk Utility and select "Restore"

At present yous need to set the source disk for the restore. This is why we mounted the InstallESD.dmg file before, because we tin simply elevate and driblet the "Mac OS X Install ESD" prototype into the "Source" – if you lot didn't mountain the image, you can manually locate and select the image file yourself by clicking on "Image"

Drag the formatted USB key to the "Destination" and check "Erase destination"
Be certain y'all have the right things in the correct places, you don't want to format the wrong drive – so click on "Restore"
Now you wait while the King of beasts DMG is restored to the USB drive, this can take a while and you lot'll see a screen like this:

When this is finished, your bootable Mac Bone X Lion installer drive is complete! You tin can now boot whatsoever King of beasts compatible Mac with the USB drive, just plug the USB cardinal in, hold downward Option during initial kicking, and select the drive. Here'due south what you'll see upon booting with the drive connected:

From hither you can format, restore from backups, or reinstall Lion. If you're wondering near the other drives pictured, information technology's because I am dual booting King of beasts and Snow Leopard, and "Recovery Hard disk" is the pocket-sized recovery partition that Lion installs on its own. This process should piece of work with a standard external USB hard drive likewise, simply I have not tried that specifically.
Advantages to making a bootable Lion USB bulldoze:
Y'all can perform a make clean OS 10 Lion install with the USB drive
The King of beasts USB key drive becomes a recovery disk with access to Disk Utility, re-installation, access Time Machine backups, and everything the Recovery Hard disk partition does
Y'all will have external media to recover and reinstall Panthera leo in the event of total drive failure or some other catastrophe
Enjoy Mac OS Ten 10.7 Panthera leo!