In Disk Utility, select g in the sidebar.
However, unlike with the CD- and DVD-based Mac OS X installers of old, Apple canand doesupdate the Mac App Store version of the Lion installer.
Part 1: For all types of media.Warning: The next step will erase the destination drive or partition, so make sure it doesnt contain any valuable data.So if you create a bootable Lion-installer drive using the current version of the Lion installerwhich, as of 2/10/2012, installs OS.7.3that drive will work with all current Lion-capable Macs.(Or the boot partition if you're feeling gutsy.As I explained in our main Lion-installation article, you should be able to force a re-download using one of the following three tricks: First, Optionclick the Buy App button in the Mac App Store.First we are going windows live mesh activex uninstall to locate the Lion g file and mount it : Navigate to your applications folder, right-click (or control-click) on the Install Mac Oion.
Now that the USB flash drive has been formatted to the appropriate filesystem, we are going to restore the previously mounted g file to the blank USB drive.
You will have external media to recover and reinstall Lion in the event of total drive failure or some other catastrophe.
Once it asks you for a disk to install on, choose the external drive or spare partition.It will be the file in the folder with the largest file size.This will be fine as long as you don't let the app restart your machine.If that doesn't work, quit the Mac App Store app and then hold down the Option key while launching the Mac App Store again.Comments last 2 days, no new comments, links last 2 weeks.Enter your admin password when prompted, and the installer will start downloading.This will give you a little insurance against the installer rebooting the system, since the app won't let the system reboot until you respond to its message asking whether you want to save the document or not.Do this quickly, as it may automatically reboot for you after a timeout period (although if you've got an unsaved document open, you should be able to prevent that).Heres what youll see upon booting with the drive connected: From here you can format, restore from backups, or reinstall Lion.Wait for the download to finish.
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