With Lion, How Can I Erase the Hard Drive and Reinstall The System Software?

I plan on buying a used iMac with a Core 2 Duo so that I can run Lion. Since Lion can only be purchased at the Mac App store what if I needed to erase my hard drive and re-install the system software. How can I do this without a DVD with the OS on it like I have for Snow Leapard. I suppose that I could boot from my Snow Leapard DVD and do the erase. Then, I supposed I would be able to download Lion again from the Mac App Store without paying for it again. But, how would you erase a hard drive and reinstall the system software when purchasing a new Mac with Lion already installed and no DVD at all with the OS on it?
-- Kaydell

When someone purchases any Apple computer with a DVD Drive, they should have recieved two DVDs... One contains the Operating System (up to Snow Leopard, Lion no longer ships on DVD) and the other contains the SYSTEM SOFTWARE (i.e. iLife and iWork). To install the software, they just insert the DVD with the SYSTEM SOFTWARE into any compatible Mac and run the installer. There is no need to erase the hard drive to install SYSTEM SOFTWARE. Maybe a friend can let you borrow the SYSTEM SOFTWARE DVD. The other option is to purchase the software via the App Store.
FYI... App Store purchases are linked to the PURCHASER'S APPLE ID. So if you buy a used Mac from a friend and that Mac already has Lion installed on it,that Lion purchase is linked to YOUR FRIEND'S APPLE ID, not yours. So if you want to download Lion again, you will have to enter your FRIEND'S APPLE ID AND PASSWORD. You can always have your friend re-download Lion and make you a DVD copy.

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1. Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button. Select Disk Utility from the main menu and click on the Continue button.
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Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
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Cornelius,
ask as many questions as necessary! I know it is a confusing situation.
Your profile lists OS X 10.3.7.
I believe I upgraded last year to 10.3.9.
Do you have a Full Retail Version of Panther available for re-install?
Yes.
What OS version(s) do you have a full retail version for?
For 10.1, 10.2 and 10.3.2.
Do you have an OS currently installed on your computer?
I don't know...
This morning I had set my mind to do the Erase & Install. I inserted the 10.1 disk, opened DUtility and selected "Erase" from the tablist. At that point the hard drive under the top-triangle was already grey I believe. I selected the top line, or the grey line, am not sure which was last. The computer started to spin. I can't tell if it erased anything at that point. But I know that once the computer stopped spinning its operationwheel, I quit DU and went on trying to install, but then there was no installation disc available. There was just a blanc field.
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A Gen3 is identical board to a Gen4 although they have some differences in firmware and wireless card was updated on every model.. but a Gen3 is substantially faster than Gen1, Gen2 which also have identical boards.
You can with careful shopping get a Gen3 pretty cheap.
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But if the board is gone.. it is hard to repair.. not impossible.. but hard.
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See this page.
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Here is a pic of the Gen 3 totally powered by me. All onboard power removed.
This was to track down the fault in the Gen3.. but I am kind of pleased that it ended up neat enough and reliable enough to work for more than a year.. the Gen3 still serves as a way to get Netflix via network for a friend running 24/7.
The units supply (from left to right)
1v, 1.1v, 3.3v, 5v, 1.8v
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Format the hard drive and reinstall Mac OS X if i have lost the dvd's

Hi
I own a 2011 macbook pro 17" and it my disk is almost full so the computer is frezzing all the time and stuff. So i thought of formatting the drive and reinstalling the OS but i can't find the dvd's that came with it and i'm really not sure if there were any dvd's that came with it. Why do I do?
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adrianlazlow wrote:
my disk is almost full so the computer is frezzing all the time
Reduce data off of it so it's less than 80% filled, use a external drive.
That's all you need basically.
Most commonly used backup methods
Why is my computer slow?

With Lion, How Can I Erase the Hard Drive and Reinstall The System Software?

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