Download lion dmg

Hi all!
I bougth a Lion copy about a year ago. Now I want to do a clean install on my Mac so I've to download the dmg of Lion from App store. Anyway from App Store I can't no more find my Lion purchased copy. Any idea to solve this problem?

You don't need to download Lion from the App Store because you can do a clean install starting from Recovery HD, holding Command and R keys while your Mac is starting > http://support.apple.com/kb/HT4718 After starting in Recovery, erase Macintosh HD in Disk Utility, close Disk Utility and reinstall OS X.
However, it's better to make a bootable copy of your Lion installer onto a DVD or USB drive so you won't have to redownload Lion every time you want to reinstall it.
If you don't see Lion listed in purchases, check if it's hidden, and if so, unhide it > http://support.apple.com/kb/ht4928 Do this before reinstalling OS X Lion from Recovery. After unhiding, go to Purchases and you will be able to download Lion. Then, use Lion Diskmaker to create a bootable DVD or USB drive with Lion > http://liondiskmaker.com

Similar Messages

When I attempt to re-download Lion to my MacBook Air I get the following error: localhost Install Mac OS Lion[436]: Retrying pisa://1183a0570:::/InstallESD.dmg after 1 failure(s). I am trying to re-install the OS after erasing having erased the drive.

When I attempt to re-download Lion to my MacBook Air I get the following error: localhost Install Mac OS Lion[436]: Retrying pisa://1183a0570:::/InstallESD.dmg after 1 failure(s). I am trying to re-install the OS after erasing having erased the drive. Any ideas?

I had the exact same issue; Lion recovery from Command + R would hang with the logs showing the same message. To resolve, I used Disk Utility to remove the recovery partition. My Air then used Internet Recovery to load all the tools. When using Reinstall via Internet it worked just fine.

My MacBook Pro came with Lion pre-installed so I can't re-download it from the app store. Is it possible to get the installESD.dmg file and how can I get it if I can't re-download Lion in Apple Store option?

My MacBook Pro came with Lion pre-installed so I can't re-download it from the app store. Is it possible to get the installESD.dmg file and how can I get it if I can't re-download Lion in Apple Store option?

FYI Mac OS X is not designed to be installed on additional Macs, unless you purchased it from the App Store, in which case you can make as many copies as you wish and install it on as many Macs as you own.
From the Recovery Disk Assistant -
Notes
If the computer shipped with OS X Lion or Mountain Lion, the external recovery drive may only be used with the system that created it.
If the system was upgraded to Lion or Mountain Lion purchased from the App Store, the external recovery drive can be used with other similarly-upgraded systems.

I've downloaded Lion. I have a boot disk. Can I use it to install on another machine?

I downloaded Lion from the Mac App store and it's working 100%. Love it.
After downloading and before installing, I copied the installESD.dmg (I think that's the correct filename) to a DVD (as per all the instructions out there to create a boot disc). I did NOT copy the entire "Install Lion App" to the DVD.
My question is: if a friend buys lion from the app and then cancels the download, can he use my boot disk to install lion as an upgrade? The reason I'm asking is that his Internet connection is rubbish and he can't download it. Presumably if I copy the dmg file to his hard disk I can run it that way?

Actually, you can burn a DVD or USB (8GB) thumb drive and let him boot and install from it. Or, you can actually run the InstallESD.dmg file from his machine. I've done both and Lion installs.
Personally, I would burn a DVD or thumb drive so you always have it.
Burn the InstallESD.dmg to a bootable DVD.
Launch Disk Utility and click the Burn button
Select the InstallESD.dmg file from your desktop as the image to burn. Insert a blank DVD and wait for the the image to be burned.
Burn the InstallESD.dmg to a bootable USB thumb drive.
Open Disk Utility and drag the InstallESD.dmg file to the left side pane. Go to the Partition tab ad select 1 Partition from the drop down menu. Choose Mac OS Extended (Journaled) on the left. Click the Options button under the partition table and choose GUID Partition Table. You will need this to make the drive bootable on a Mac. Hit the Apply button when ready to format the drive (it will erase everything on the drive).
Click on the Restore tab and drag the InstallESD.dmg file to the Source. Drag the USB partition to the Destination. Hit the Restore button and it will create the bootable USB drive with the OS X Lion installer

How do I download LION and do a clean install on a new disk?

I have a brand new HD which has not yet been formatted. I would like to download Lion and instead of updating my Snow Leopard OS disk I would like to do a clean install on this new drive.
Do I first do a journaled format on the new drive...? And if so how do I download LION from the APP store and pointn the install at the new target drive?

How to Install Lion Successfully
A. Repair the Hard Drive and Permissions:
Boot from your current Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. Then select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior (4.0 for Tiger) and/or TechTool Pro (4.5.2 for Tiger) to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
B. Make a Bootable Backup Using Restore Option of Disk Utility:
Open Disk Utility from the Utilities folder.
Select the destination volume from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the destination volume from the left side list and drag it to the Destination entry field.
Select the source volume from the left side list and drag it to the Source entry field.
Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.
C. Important - Please read before installing:
If you have a FireWire hard drive connected, disconnect it before installing the update unless you will boot from this drive and install the update on it. Reconnect it and turn it back on after installation is complete and you've restarted.
You may experience unexpected results if you have installed third-party system software modifications, or if you have modified the operating system through other means. (This does not apply to normal application software installation.)
The installation process should not be interrupted. If a power outage or other interruption occurs during installation, use the standalone installer (see below) from Apple Downloads to update. While the installation is in progress do not use the computer.
D. To upgrade:
Purchase and Download Lion from the App Store.
E. If you want to make a bootable USB flash drive:
Make Your Own Lion Installer
1. After downloading Lion you must first save the Install Mac OS X Lion application. After Lion downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the Lion installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing Lion.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to several hours depending upon the drive size.
3. Locate the saved Lion installer in your Downloads folder. CTRL- or RIGHT-click on the installer and select Show Package Contents from the contextual menu. Double-click on the Contents folder to open it. Double-click on the SharedSupport folder. In this folder you will see a disc image named InstallESD.dmg.
4. Plug in your freshly prepared USB flash drive. You are going to clone the InstallESD.dmg disc image to the flash drive as follows:
Open Disk Utility.
Select the USB flash drive from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the USB flash drive volume from the left side list and drag it to the Destination entry field.
Drag the InstallESD.dmg disc image file into the Source entry field.
Double-check you got it right, then click on the Restore button.
When the clone is completed you have a fully bootable Lion installer that you can use without having to re-download Lion. You can also use it to erase your hard drive and do a clean Lion installation.

How to re-download Lion Disk Assistant app?

I purchased and downloaded Lion 10.7 from the App store. There was supposed to be a Lion Download Assistant app included with the download however I cannot find it on my HD. The app store is no help since it says that Lion is already downloaded and is grayed out (see attached image). I want to make a thumb drive recovery disk. Is there a way to redownload the assistant?
Thanks,
Don

There is no "Lion Download Assistant" included with the Lion installer. There is a Recovery Disk Assistant that can be separately downloaded from Apple's download site.
If you want a Recovery HD on a USB flash drive get Lion Recovery Disk Assistant 1.0. If you wanted to make a bootable Lion installer on a USB drive then you needed to save the Lion installer you downloaded. See the following:
Make Your Own Lion Installer
1. After downloading Lion you must first save the Install Mac OS X Lion application. After Lion downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the Lion installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing Lion.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to several hours depending upon the drive size.
3. Locate the saved Lion installer in your Downloads folder. CTRL- or RIGHT-click on the installer and select Show Package Contents from the contextual menu. Double-click on the Contents folder to open it. Double-click on the SharedSupport folder. In this folder you will see a disc image named InstallESD.dmg.
4. Plug in your freshly prepared USB flash drive. You are going to clone the InstallESD.dmg disc image to the flash drive as follows:
Open Disk Utility.
Select the USB flash drive from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the USB flash drive volume from the left side list and drag it to the Destination entry field.
Drag the InstallESD.dmg disc image file into the Source entry field.
Double-check you got it right, then click on the Restore button.
When the clone is completed you have a fully bootable Lion installer that you can use without having to re-download Lion.

I can't download Lion on my MacBook Pro today is something wrong with the site?

I am trying to download Lion for the first time. I have a MacBook Pro 2.6Ghz Intel Core 2 Duo with 4 GB 667 MHz DDR2 SDRAM and the Apple Store is not responding. Is anyone else having problems?
Thanks

If you have problems with updating or with the permissions then easiest is to download the full version and trash the currently installed version to do a clean install of the new version.
Download a new copy of the Firefox program and save the DMG file to the desktop
* Firefox 4.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html
* Trash the current Firefox application to do a clean (re-)install
* Install the new version that you have downloaded
Your profile data is stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder], so you won't lose your bookmarks and other personal data.

Where is the lion .dmg

Downloaded Lion 10.7 for my Imac installed etc works fine exept for my scanner software. But on the forums it said you get 5 licenses for Lion do I need to download the whole program every time for each machine? all he guilds i've read say you need to burn it to a dvd before you install lion which is now too late now, and if i do need to download it for each machine how will it handle my sister's and my dad's machines because they have their own apple accounts ? will it just reject it as soon as they swap back to thier account or will all the machines be registed to my account from then on? if anyone has any info please let me know.

After lion installs it deletes the installer. You can download lion again on your computer from the app store by holding down the option key while clicking the purchases tab. The button next to Lion should change from "installed" to "install" click "install" and download the file again. Once you have downloaded the installer again, locate it in Finder, right click on it and click "Show Package Contents". click on the folder "SharedSupport" and then copy the dmg "InstallESD" onto your desktop. you can then burn that file to a cd and use it like an installer cd.
Source: http://mac.appstorm.net/general/how-and-why-to-make-a-lion-boot-disc/?utm_source =feedburner&utm_medium=feed&utm_campaign=Feed%3A+MacAppStorm+%28Mac+AppStorm%29

What to do before downloading Lion via thumbnail to MacBook Pro?

I have a MacBook Pro with Mac OS X 10.6.8. I'm not very computer literate. I have a thumbnail to download OS X Lion. Do I have to do anything before I put it in and down load it?

How to Install Lion Successfully
A. Repair the Hard Drive and Permissions:
Boot from your current Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. Then select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior (4.0 for Tiger) and/or TechTool Pro (4.5.2 for Tiger) to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
B. Make a Bootable Backup Using Restore Option of Disk Utility:
Open Disk Utility from the Utilities folder.
Select the destination volume from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the destination volume from the left side list and drag it to the Destination entry field.
Select the source volume from the left side list and drag it to the Source entry field.
Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.
C. Important: Please read before installing:
If you have a FireWire hard drive connected, disconnect it before installing the update unless you will boot from this drive and install the update on it. Reconnect it and turn it back on after installation is complete and you've restarted.
You may experience unexpected results if you have installed third-party system software modifications, or if you have modified the operating system through other means. (This does not apply to normal application software installation.)
The installation process should not be interrupted. If a power outage or other interruption occurs during installation, use the standalone installer (see below) from Apple Downloads to update. While the installation is in progress do not use the computer.
D. To upgrade:
Purchase and Download Lion from the App Store.
E. If you want to make a bootable USB flash drive:
Make Your Own Lion Installer
1. After downloading Lion you must first save the Install Mac OS X Lion application. After Lion downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the Lion installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing Lion.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to several hours depending upon the drive size.
3. Locate the saved Lion installer in your Downloads folder. CTRL- or RIGHT-click on the installer and select Show Package Contents from the contextual menu. Double-click on the Contents folder to open it. Double-click on the SharedSupport folder. In this folder you will see a disc image named InstallESD.dmg.
4. Plug in your freshly prepared USB flash drive. You are going to clone the InstallESD.dmg disc image to the flash drive as follows:
Open Disk Utility.
Select the USB flash drive from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the USB flash drive volume from the left side list and drag it to the Destination entry field.
Drag the InstallESD.dmg disc image file into the Source entry field.
Double-check you got it right, then click on the Restore button.
When the clone is completed you have a fully bootable Lion installer that you can use without having to re-download Lion.

Need to download Lion again?

I have the latest version of OSX Lion 10.7.3, but when I open Appstore, it says that I can download Lion, even though I already have it installed. If I go to the "Purchased" tab in Appstore all my bought Apps are installed except for Lion where it says "Install" instead of "Installed". Does anyone know if this is an update or if I just should ignore this?
Thanks in advance!
//Patric

Ignore it. If you're running 10.7.3 and Software Update says you're up-to-date you're good to go.
You may want to take the opportunity to download and save the Lion installer.dmg, if you don't have one, in case you ever need to re-install.

Do I need to download Lion seperately for each mac in my house?

Do I need to download Lion seperately for each mac in my house? Which would also result in paying for it multiple times, or is there some way to install on multiple macs with one download?

No. You can install Lion on all the computers you personally own. Just be sure each is running Snow Leopard 10.6.6 or later. Open the App Store on each computer and log in using the Apple ID you used to purchase Lion. Click on Purchases. Click on the Install button to the right of the entry for your Lion purchase. The installer will be re-downloaded.
You may want to read the following first:
Make Your Own Lion Installer
1. After downloading Lion you must first save the Install Mac OS X Lion application. After Lion downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the Lion installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing Lion.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to several hours depending upon the drive size.
3. Locate the saved Lion installer in your Downloads folder. CTRL- or RIGHT-click on the installer and select Show Package Contents from the contextual menu. Double-click on the Contents folder to open it. Double-click on the SharedSupport folder. In this folder you will see a disc image named InstallESD.dmg.
4. Plug in your freshly prepared USB flash drive. You are going to clone the InstallESD.dmg disc image to the flash drive as follows:
Open Disk Utility.
Select the USB flash drive from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the USB flash drive volume from the left side list and drag it to the Destination entry field.
Drag the InstallESD.dmg disc image file into the Source entry field.
Double-check you got it right, then click on the Restore button.
When the clone is completed you have a fully bootable Lion installer that you can use without having to re-download Lion.

Is there any way for downloading LION without recovery tool? macbook air (mid 2011) ?

I recently bought a macbook air(mid 2011) and I am using ADSL internet services which needs couple of hours to complete downloading of LION. but when I come back to see what happened few hours after download started, I found myself in Lion Recovery startiting page !
seems that I am in a endless loop !!
In addition, Its not possible to download it from app store, since it shows that the application has beed installed already. is there any suggestion ?
I guess I should first download it using speed download and then install it !

Have you tried holding the Option key down and then clicking on "Purchases" in the App Store interface? If this works, then you'll see "Install" instead of "Installed" against Lion. Download Lion then -- it will go to your Applications folder -- and do not give your password for installation to execute. You should then have the full Lion installation package in your Applications folder. With "Show Package Contents", in "Shared Support" find InstallESD.dmg. If you burn that to a blank DVD you'll have a Lion Install disc. But since you have a MacBook Air, you could use a (not less than 8 GB capacity) pen drive to store the installation without having to do the full download every time.

Can you download Lion and place on two devices?

I have an Imac and macbook - can you downloas Lion and transfer / copy to both machines?
Many thanks, G

Yes. You must have Snow Leopard 10.6.8 installed on each so you can purchase and download it. You can then re-download on the other computer without having to pay for it a second time. Or you can do the following:
Make Your Own Lion Installer
1. After downloading Lion you must first save the Install Mac OS X Lion application. After Lion downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the Lion installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing Lion.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to several hours depending upon the drive size.
3. Locate the saved Lion installer in your Downloads folder. CTRL- or RIGHT-click on the installer and select Show Package Contents from the contextual menu. Double-click on the Contents folder to open it. Double-click on the SharedSupport folder. In this folder you will see a disc image named InstallESD.dmg.
4. Plug in your freshly prepared USB flash drive. You are going to clone the InstallESD.dmg disc image to the flash drive as follows:
Open Disk Utility.
Select the USB flash drive from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the USB flash drive volume from the left side list and drag it to the Destination entry field.
Drag the InstallESD.dmg disc image file into the Source entry field.
Double-check you got it right, then click on the Restore button.
When the clone is completed you have a fully bootable Lion installer that you can use without having to re-download Lion.

Re-download lion

I bought Lion several months ago and installed it. My hard drive has failed, along with the "Recovery" partition. How can I download a fresh copy of Lion without having to pay for it again?

Install Snow Leopard 10.6.6 or later. Open App Store and sign in with the Apple ID you used to purchase Lion. Click on the Purchase icon in the toolbar. You should see an active Install button to the right of your original Lion purchase entry. To avoid this in the future see:
Make Your Own Lion Installer
1. After downloading Lion you must first save the Install Mac OS X Lion application. After Lion downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the Lion installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing Lion.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to several hours depending upon the drive size.
3. Locate the saved Lion installer in your Downloads folder. CTRL- or RIGHT-click on the installer and select Show Package Contents from the contextual menu. Double-click on the Contents folder to open it. Double-click on the SharedSupport folder. In this folder you will see a disc image named InstallESD.dmg.
4. Plug in your freshly prepared USB flash drive. You are going to clone the InstallESD.dmg disc image to the flash drive as follows:
Open Disk Utility.
Select the USB flash drive from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the USB flash drive volume from the left side list and drag it to the Destination entry field.
Drag the InstallESD.dmg disc image file into the Source entry field.
Double-check you got it right, then click on the Restore button.
When the clone is completed you have a fully bootable Lion installer that you can use without having to re-download Lion.

Downloading Lion installation app with a computer already running Lion?

How do you download the OS X Lion installation app from the Mac App Store with a mac running Lion already? (It shipped with Lion)

You can't download Lion from the App Store for systems that shipped with Lion pre-installed. It wasn't purchased from the App Store. You have to boot to the Recovery HD (Command + R); then redownload and install from there.
If you want to avoid the redownload and install, follow the instructions at this site to capture the InstallESD.dmg file then 'restore' that to a bootable USB thumb drive. Then you can boot from the thumb drive and run the installer without having to redownload.

Download lion dmg

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