I downloaded Mountain Lion on my Mac Book Pro but when I go to install it, it says "OS X cannot be installed on Lion." Any advice?
I downloaded Mountain Lion on my Mac Book Pro but when I go to install it, it says "OS X cannot be installed on Lion." Any advice?
Right-Click the "Install OS X Mountain Lion" installer under /Applications and select Show Package Contents and drill down through the folders; Contents/SharedSupport. Drag the InstallESD.dmg file to your desktop. Grab an 8GB USB stick as the file is 4.35GB's and might not fit on a 4GB USB stick. Then mount the DMG by double-clicking it and stick your 8GB USB stick in and that will mount then you can use Disk Utility to restore the DMG to the 8GB USB stick. Then shutdown and reboot while holding the Option key and select the USB drive. See if that will let you install Mountain Lion.
One more thing, you have to format the USB Stick first and ensure it's set to GUID mode (under Partition tab Options button) or it won't boot.
More detailed instructions:
http://osxdaily.com/2012/02/17/make-bootable-os-x-10-8-mountain-lion-usb-install -drive/
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HT1338 Can I upgrade from OS X v10.6.8 straight to Mountain Lion on a Mac Book Pro?
Hello, does anyone know if I can upgrade from OS X v10.6.8 straight to Mountain Lion on a Mac Book Pro? Thanks
Yes.
Upgrading to Snow Leopard, Lion, or Mountain Lion
Upgrading to Snow Leopard
You can purchase Snow Leopard by contacting Customer Service: Contacting Apple for support and service - this includes international calling numbers. The price is $19.99 plus tax. You will receive physical media - DVD - by mail.
Third-party sources for Snow Leopard are:
Snow Leopard from Amazon.com
Snow Leopard from eBay
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store.
Before upgrading check that you computer meets the minimum requirements:
Snow Leopard General requirements
1. Mac computer with an Intel processor
2. 1GB of memory
3. 5GB of available disk space
4. DVD drive for installation
5. Some features require a compatible Internet service provider; fees may
apply.
6. Some features require Apple’s MobileMe service; fees and terms apply.
Upgrading to Lion
First, you need to upgrade to Snow Leopard 10.6.8 as stated above.
You can purchase Lion by contacting Customer Service: Contacting Apple for support and service - this includes international calling numbers. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
Before upgrading check that you computer meets the minimum requirements:
Lion System Requirements
1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or
Xeon processor
2. 2GB of memory
3. OS X v10.6.6 or later (v10.6.8 recommended)
4. 7GB of available space
5. Some features require an Apple ID; terms apply.
Upgrading to Mountain Lion
Be sure your computer meets the minimum requirements:
Apple - OS X Mountain Lion - Read the technical specifications.
Macs that can be upgraded to OS X Mountain Lion
1. iMac (Mid 2007 or newer)
2. MacBook (Late 2008 Aluminum, or Early 2009 or newer)
3. MacBook Pro (Mid/Late 2007 or newer)
4. MacBook Air (Late 2008 or newer)
5. Mac mini (Early 2009 or newer)
6. Mac Pro (Early 2008 or newer)
7. Xserve (Early 2009)
Are my applications compatible?
See App Compatibility Table - RoaringApps - App compatibility and feature support for OS X & iOS.
Am I eligible for the free upgrade?
See Apple - Free OS X Mountain Lion upgrade Program.
For a complete How-To introduction from Apple see Apple - Upgrade your Mac to OS X Mountain Lion. -
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Hi..
I repled to you here > https://discussions.apple.com/message/25598596#25598596
Please do not start duplicate topics. It makes it that much harder to assist you. -
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Can I upgrade my iPad 1 to the ios5,
Yes.
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An search on the internet gives different outcomes..
thank you!JJDDSS wrote:
Is it advisable to install mountain lion on my mac book pro, bought in october of 2008
The date of purchase is not a reliable indicator that your Mac Book Pro meets the requirements for Mountain Lion.
Check out exact technical informaitons for supported models here:
http://www.apple.com/osx/specs/
Even if your computer meets the requirements for Mountain Lion doesn't necessarily mean it's advisable to do so. For example, if you rely on applications that are not compatible with Mountain Lion.
Matt -
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You have some other problem with your boot drive that has corrupted data backed up to the TimeMacine drive.
My advice is to boot into each operating system and manually backup just your Users files each to separate regular external drives (no Timemachine or backup software) and disconnect.
Make a note of any serial numbers, emails, address book contacts, export bookmarks etc. that isn't typically in your users folders data.
You might be able to Winclone 3 the Windows as a whole thing as it's appearing not to have issues but it's your MacintoshHD partition that is so that will have to be rebuilt from scratch.
Most commonly used backup methods
If your OS X parititon doesn't boot, you can use this to recover files.
Create a data recovery/undelete external boot drive
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Install/upgrade RAM or storage drive in Mac's
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Erase, formatting, OS X installs on Mac's -
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