How to Burn a Lion Install DVD and Create Bootable Thumb Drive

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strabes

followed the instructions exactly, when I press enter to boot from the 8gb flash drive it gives me the circle with a slash through it icon on the grey boot screen.

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jcnyc

Is there any way I can safe my Lion version on a DVD after been installed already.

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makai4325

I have done all this.. but i went to test and when i hold down the "c" it don't do anything. I waited like 5 min too. thought i did try command + r and that worked. but my brother wanted to restore his computer and reinstall Lion and it required him to redownload from the mac app store. I think this method doesn't work unless you reinstall OS X Leopard then install Lion

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Luba

Does it have to be DVD -R? I used a DVD +R to create the bootable Lion Install, but I have tested it so I don't know if it will work.

BTW, what's the difference between DVD +R and DVD -R??

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rumali35

I can't seem to find the lion app so that I can get that installESD.

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karkooshy

That's pretty cool :o
But would it solve the problem with the people owning macs (compatible with Lion hardware-wise, but...) still stuck with Leopard as oppose to snow leopard?

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ilikeimac

Disk Utility is telling me that my 4GB thumb drive isn't big enough. When I mount the InstallESD.dmg image it's capacity is 4.18 GB. Guess I need a bigger drive.

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corybohon

Yes, sorry about that. I'm correcting the article. You need a larger thumbdrive for the overhead.

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ilikeimac

I notice your Disk Utility settings show that the thumb drive's Partition Map Scheme is Master Boot Record. Doesn't it need to be GUID in order to be bootable?

I've heard that a lot but then again I read somewhere recently that sometimes you can boot from an MBR disk and it's more about having the right drivers or something, but that was when I was trying to make bootable Linux thumb drives for a Mac.

Anywho, if you're having trouble booting from a thumb drive you made following the instructions above, use the "Options…" button in the "Partition" tab of disk utility to repartition it using GUID instead of Master Boot Record.

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brina0214

What happens if I read this AFTER I finished installing Lion so it's already been deleted?? Is there anyway to still make a bootable thumb drive??

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apstewart

Per an Apple URL I can't seem to paste:

To redownload the installer on a computer running OS X Lion, press and hold the Option key while you click the Purchases tab. If the button to the right of the Install Mac OS X Lion item doesn't change to "Install" and allow you to download Lion, use Spotlight to search for "Install Mac OS X Lion" on your computer.

I'm doing this right now so I can burn to an SD card.

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Scooter Rocks

If you click install, it will just download Lion again, not re-install it, right?

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HamRadioActive

I cannot seem to be able to find the app Install Mac OS X Lion. I sure don't want to sit around again for an hour while it down loads again. Is it a hidden file? I used spotlight and no luck finding Install Mac OS X Lion.app. I have an 8GB DVD to burn the boot disk on so I'm ready. Wish Apple would send a Boot Disk in the mail for the cost of burning and shipping after you pay for the software in the App Store.

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ilikeimac

Have you tried opening the App Store and re-downloading Lion? I haven't upgraded yet so I wouldn't know if that avenue is cut off or not.

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corybohon

If you have another Mac that's linked to your App Store account, you should be able to download the installer again without any issues (by going to the Purchased section). After you've installed, the Mac App Store will list OS X Lion as already installed and won't let you re-download it on that particular machine.

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Scooter Rocks

One of the commenters, 'apstewart', said, "To redownload the installer on a computer running OS X Lion, press and hold the Option key while you click the Purchases tab. If the button to the right of the Install Mac OS X Lion item doesn't change to "Install" and allow you to download Lion, use Spotlight to search for "Install Mac OS X Lion" on your computer." Do you know if this works or not? (I would be doing it on a friend's computer, so I don't have a way to test it yet)

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