A Bootable Flash Drive With OS X Lion Installer,Creating a bootable flash pressure using the OS X Lion installer may additionally seem like a difficult technique.
however it is a DIY mission any Mac person can carry out furnished you have a little bit of time and this on hand manual to take you via the system.
OS X Lion and its downloadable installer create a conundrum for Mac customers who would like to have bootable media from which to install Lion.
A Bootable Flash Drive With OS X Lion Installer, The purpose many people want to have a bootable Lion installer is to create clean installs: that is, to install Lion on a freshly formatted hard power that doesn’t include any preceding OS.
The different important reason to need a bootable Lion installer is for emergency booting and restore of your Mac’s tough power. It’s authentic that Lion creates a bootable Recovery partition that you can use for troubleshooting. But the Recovery partition is simplest usable in case your force is in basic running order.
If your pressure has a corrupt partition table, or you have replaced the hard force, then the Recovery partition is downright vain.
Since we’ve legitimate motives for wanting a bootable replica of the Lion installer, we’re going to expose you a way to create one the use of a USB flash power.
01 What You Need for a Bootable OS X Lion Flash Drive
You will need:
- OS X Lion installer. This is available from the Mac App Store.
- 8 GB USB flash drive. You can use a larger force if you want, however greater important than the scale of the flash pressure is its speed. If you are buying a new flash force just for Lion, I endorse shopping for one of the fastest available. While sluggish (examine: inexpensive) flash drives will paintings great, you will discover that both the time it takes to create the bootable flash replica of the OS X Lion installer and the time it takes to install Lion on a goal drive, will be particularly lengthy.
- Some unfastened time. The advent time varies by the velocity of the USB flash pressure, but plan on 30 minutes to over an hour.
02 Prepare Flash Drive for OS X Lion Installer
A Bootable Flash Drive With OS X Lion Installer, Most flash drives don’t come formatted with the local OS X file gadget so the flash power you’re the usage of to create a bootable Lion installer must be erased and formatted to apply the GUID Partition Table and the Mac OS X Extended (Journaled) document device.
Erase and Format Your Flash Drive
A Bootable Flash Drive With OS X Lion Installer, If this is a new USB flash power, you could discover that it has been pre-formatted for use with Windows.
If you’ve already been the use of the flash drive along with your Mac, it could already be formatted effectively, but it is nonetheless pleasant to erase and format the flash drive to make sure that the OS X Lion installer you copy to the flash pressure will boot properly.
Warning: All facts at the USB flash drive can be erased
1.Insert the USB flash drive into your Mac’s USB port.
2. Launch Disk Utility, positioned at /Applications/Utilities.
3. In the Disk Utility window, search for the flash power in the list of attached devices.
4. Look for the device call, which typically appears because the force size followed through the manufacturer’s call, which include sixteen GB SanDisk Cruzer. Select the force (not the extent name, which may additionally seem beneath the force producer’s name), and click on the Partition tab.
5. Use the Volume Scheme drop-down window to choose 1 Partition.
6. Enter a name for the extent you’re about to create. I opt to use the call that Apple originally assigned to the Lion installer photo that we will replica in a later step, so I enter Mac OS X Install ESD as the volume’s name.
7. Make positive the Format drop-down menu is about to Mac OS X Extended (Journaled).
8. Click the Options button, choose GUID as the Partition Table kind, and click OK. Click the Apply button.
9. Disk Utility will show a sheet asking if you’re certain you want to partition your USB flash drive. Click Partition to continue.
10. Once Disk Utility finishes formatting and partitioning the USB flash power, cease Disk Utility.
With the USB flash force prepared, it is time to transport directly to making ready and copying the OS X Lion installer picture.
03 Copy the OS X Lion Installer Image to Your Flash Drive
A Bootable Flash Drive With OS X Lion Installer, The OS X Lion installer software which you downloaded from the Mac App Store includes an embedded bootable image that the software makes use of all through the installation method.
In order to create our own USB flash-drive-based bootable Lion installer, we virtually need to duplicate this embedded photograph to the flash force.
We’re going to use Disk Utility to clone the OS X Lion installer picture to the flash pressure. Because Disk Utility’s cloning technique must be able to see the picture record, we ought to first replica the embedded picture report to the laptop, in which Disk Utility can see it without any problems.
Copy the Installer Image to the Desktop
1.Open a Finder window and navigate to /Applications/.
2. Right-click on on Install OS X Lion (that is the installer you downloaded from the Mac App Store), and pick Show Package Contents from the pop-up menu.
3. Open the Contents folder.
4. Open the SharedSupport Folder.
5. Within the SharedSupport Folder is an picture record called InstallESD.Dmg.
6. Right-click on the InstallESD.Dmg document and choose Copy from the pop-up menu.
7. Close the Finder window.
8. Right-click on in a clean area of the laptop, and pick Paste Item from the pop-up menu.
9. This will create a copy of the InstallESD.Dmg document on the laptop.
Clone the InstallESD.DMG File to the Flash Drive
1.Launch Disk Utility, if it is no longer already open.
2. Click the flash force device (now not the quantity call) inside the Disk Utility window.
3. Click the Restore tab.
4. Drag the InstallESD.Dmg from the device listing to the Source area.
5. Drag the Mac OS X Install ESD quantity name from the tool listing to the Destination discipline.
6. Make sure the Erase Destination container is checked.
7. Click Restore.
8. Disk Utility will ask in case you’re sure you want to carry out the repair characteristic. Click Erase to continue.
9. You can be asked on your administrator account password; supply the important statistics and click OK.
10. The clone/restore manner can take a piece of time. Once the manner is entire, you may give up Disk Utility.
Using the Bootable Flash Drive
To use the bootable flash pressure as an OS X Lion installer, you need best do the following:
1.Insert the USB flash force into certainly one of your Mac’s USB ports.
2. Restart your Mac.
3. When your Mac’s display turns off, maintain down the option key while your Mac reboots.
4. You might be provided with the OS X Startup Manager, listing all bootable gadgets connected for your Mac. Use the arrow keys to select the bootable flash power you created, after which press return or input.
5. Your Mac will end restarting the use of the flash drive. From there you may use the commands in this step-with the aid of-step manual to finish the OS X Lion installation.