While this allows you to get your hands on Lion quickly, it has a few drawbacks.
Apple attempted to address the need to be able to run Disk Utility byincluding a recovery drivewith Lion.
During the Lion installation process, a special recoverydisk partitionis created.
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It also lets you reinstall Lion, if necessary.
However, if the drive that the recovery partition is on goes bad, you’re out of luck.
Create the Bootable DVD
Creating a bootable macOS Lion install DVD is fairly easy.
The complete steps are outlined in the following article:Create a Bootable Copy of OS X Lion.
All the data on the drive will be lost.
If you have a current backup, you’re ready to continue.
As soon as the Mac restarts, use thestartup keyboard shortcutby holding down theCkey.
This forces your Mac to boot from the DVD.
When you see the Apple logo and the spinning gear, release theCkey.
The boot process takes a long time, so be patient.
To erase the target disk for your Lion install, selectDisk Utilityfrom the list and then selectContinue.
Disk Utility opens and displays a list of connected drives.
This process can take some time.
opt for disk you want to be the target for your macOS Lion install.
Use the drop-down menu to set the format jot down toMac OS Extended (Journaled).
Give the disk a name, such as Lion, or maybe Fredwhatever you like.
A drop-down window appear, asking you to confirm that you want to erase the target disk.
Disk Utilityerases the drive.
Once the erase is complete, close Disk Utility by selectingQuit Disk Utilityfrom the Disk Utility menu.
The macOS Utilities window will reappear.
Install macOS Lion
SelectRe-install Mac OS X Lionfrom the list of options, then selectContinue.
The Lion installer appears.
Accept the macOS Lion license agreement by selectingAgree.
A drop-down window appears, asking if you agree to the license terms.
A list of disks appears.
pick the disk you want to install Lion on.
This should be the same disk you erased earlier.
The Lion installer copies the necessary files to the target disk.
The installer may also download necessary components from the Apple website.
A progress bar appears with an estimate of the time to copy the needed files.
After all the necessary files are copied to the target disk, your Mac restarts.
After your Mac restarts, the installation process continues.
A progress bar displays an estimate of the installation time, which can run from 10 to 30 minutes.
You have installed macOS Lion on a disk you erased to produce a clean install.
