Boot from disk mac lion

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  1. Use Startup Disk preferences
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  3. How to Boot Snow Leopard from a DVD-ROM - dummies

As soon as the screen goes dark, unplug your external drive. If you wait too long, your Mac will boot into the Mac OS X installer on that drive, starting the installation process. Once your Mac has booted from its normal startup volume, reconnect the external drive. Alternatively, you can connect the drive to another Mac and proceed with the following steps using that Mac. The important file is the one called InstallESD. Click the padlock icon at the bottom of the window, provide an admin-level username and password, and then uncheck the box next to Ignore Ownership On This Volume.

Use that copy in Step 12, below. As a bonus, the resulting Lion-installer drive should boot and support any current Lion-capable Mac. At some point, Apple will update the Lion installer on the Mac App Store to support those newer Macs, so you can then download the updated installer and make an updated installer drive that supports even those Macs. And so on…. The next steps depend on whether you want to create a bootable hard drive or flash drive, or a bootable DVD.

I recommend a hard drive or flash drive; a DVD will work, but it will take a long time to boot and install. Note: In versions of the Lion installer prior to However, with the When prompted, insert a blank DVD a single-layer disc should work, although you can use a dual-layer disc instead , choose your burn options, and click Burn. Thanks to reader Jameel Morrison for confirming this procedure and for prodding me to finally write this article. Here's our guide to installing Lion, from the best way to get your Mac ready, to undertaking the Apple bills Lion as the easiest-to-install version of OS X yet, and that may be true.

But there are If your Mac was released after Lion, it's not quite as easy to make a bootable Lion install disc or Some Mac users prefer to do a "clean install" of each major new version of OS X, erasing their One of the most significant new features of Lion is that it lets you boot your Lion-equipped Mac Apple has released a simple utility for creating a bootable Lion Recovery volume from any external Create a bootable Lion install drive Should you do a "clean install" of Lion?

Show More. Drag the InstallESD. And so on… The next steps depend on whether you want to create a bootable hard drive or flash drive, or a bootable DVD. Connect to your Mac the hard drive or flash drive you want to use for your bootable Lion installer. In Disk Utility, find this destination drive in the sidebar and then drag it into the Destination field on the right; if the destination drive has multiple partitions, just drag the partition you want to use as your bootable installer volume.

Click Restore and, if prompted, enter an admin-level username and password. The restore procedure will take anywhere from five to 15 minutes, depending on your Mac and the speed of your drive. Thank you for the helpful tip, i will be doing that for my mac mini. Thank you. In other words, is the Snow Leopard requirement solely because you need the Mac App Store to download Lion in the first place?

So download Lion onto a Snow Leopard Mac, make the bootable install disk, then install on a Mac currently running Leopard? Is that what you are asking? That is not what christ asked. He was asking if he could make a bootable USB stick and then install Lion onto any Mac… His friends, family, bloke down the road.

Can I buy and download Lion on my MacBook Air, make a usb-stick like this, and then do a clean install with it on my iMac? Or will this usb stick only be useable on the machine I made it? Do you live in the future osxdaily? Are we assuming it will work like it has worked for other OSX releases? Not entirely true. The build downloaded from the App Store is 11A to support older Macs.

Extra updates are downloaded to make it 11A The GM is 11A In that case, the first GM was not the shipping version. Great instructions. Yes that is correct, you can choose to either upgrade Snow Leopard or perform a clean Lion install by using the USB drive method. Followed your instruction and it worked like a charm.

BTW, I used a usb hdd instead of the stick. Thanx a lot. Hi there, I just installed lion from the app store on my air, but now cannot find that lion install dmg in the applications folder. Is it a hidden file? Only partly true. If you have the foresight to let Time Machine perform a full backup of your Mac before running the Lion installer but after it has downloaded from the App Store then you can skip re-downloading the 4Gb file. Just a lil question : why is there some way to connect to a wireless network in your EFI? This is an option on MacBook Airs. I am looking to install lion as a fresh install , one of the main reasons is filevault 2.

What happens when i reinstall over the top how does that work? Is this bootable Lion image something that you can use as an emergency repair disk by adding things like DiskWarrior and TechTools Pro when they are lion certified? Or is this bootable image only capable of booting and installing Lion? On the same topic, if my assumption is incorrect, would my solution be to wait for DasBoot to be lion certified or to install of SL on a new partition, put on lion, slim it all down, and clone it to a thumb drive?

When I did my Snow Leopard upgrade I had a separate partition on the same hard drive setup as a bootable disk. It worked perfectly and I was able to keep all my existing files. Mount the InstallESB. As in, exactly as many steps as above? CCC rocks! I did not have quite enough space on my 4GB drive for Lion, but with CCC I could opt not to copy some of the packages I skipped all the languages which do not interest me and voila it fits!

CCC is the nest way to go. I have done this for Snow Leopard.


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Just choose the SD card in lieu of the USB drive stick in the instructions here and follow accordingly. With a USB stick…. The SD memory card then has greater utility. And, knowing that I have a class 6 or class 10 SD card, I also have the reassurance I can capture HD video on the camera without any problems when used to capture HD video. Just an alternative idea. Did this work on the Gold Master that was released last week since it was suppose to be the last update to OSX Lion before they let us download next week.

Can you burn me a copy of both Snow Leopard and Lion? Why do I need Snow Lepoard? I know this is way old, but I love the philosophy, seriously you spent a thousand dollars on a computer spend thirty bucks on an OS! So, VirtualBox may be free but it has some draw backs. If your laptop gets power off and the VM is running, you will lose it with no hope of getting it back.

Parallels is by far the best of the three. Download the trails and see yourself before you make a decision. Also, look on their respectable web site and compare each was well. I think you will find Parallels the best of the three. Also, they have education pricing which is half the retail cost. GUID is what you should use for any partition you want to be bootable Intel but I think it will just completely wipe the space and install it from the disk image.

Use Startup Disk preferences

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    How to create a Mac OSX Lion bootable restore disc

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