- Download Mac OS X 10.7 “Lion” in the Apple App Store
- Once downloaded, before you install, double-click the Macintosh HD icon (or click the Finder face icon on your Dock) then double-click your Applications folder.
- Locate “Install Mac OS X Lion” & right-click (Control click) the icon.
- Click the “Show Package Contents” menu item
- Double-click the Contents folder in the new window, followed by the SharedSupport folder
- You should see file called – this is the disk image you’ll make the boot disk from
- Open Disk Utility (using the Spotlight search box in the upper right corner of the screen is the quickest way to do this)
- Drag the InstallESD.dmg file into the column on the left side of the Disk Utility window
scroll down for either the bootable Tiger DVD instructions, or the bootable USB/external drive instructions…
To make a bootable Tiger DVD disc after completing numbered steps above:
- In the Disk Utility window, right-click (Control click) on where it says “InstallESD.dmg” and then click “BurnInstallESD.dmg”
- Put in a blank DVD when the new window drops down and click the blue Burn button
- Wait a few minutes and you’re done
- In the Disk Utility window, right-click (Control click) on where it says “InstallESD.dmg” and then click Restore
- A new window will open. From the column on the left in Disk Utility, drag InstallESD.dmg into the top “source” box in the new window
- From your desktop, drag the icon for the external drive you want to back up to (drive recommended to have 4.7GB free at a minimum)
- Click the Restore button, followed by the Erase button (do NOT use a drive with important files or you will lose them at this point!)
- The drive icon will vanish from your desktop and then reappear once the process is completed. May take a few minutes or longer.