I want to upgrade from Mountain Lion (10.8.5) to Yosemite. However I need to create a way to reinstall Mountain Lion in the event that I cannot use FCP 7 Studio, Aperture 3.4.5 and other software. Any suggestion would be most appreciated. Thanks

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I want to upgrade from Mountain Lion (10.8.5) to Yosemite. However I need to create a way to reinstall Mountain Lion in the event that I cannot use FCP 7 Studio, Aperture 3.4.5 and other software. Any suggestion would be most appreciated. Thanks

I want to upgrade from Mountain Lion (10.8.5) to Yosemite. However I need to create a way to reinstall Mountain Lion in the event that I cannot use FCP 7 Studio, Aperture 3.4.5 and other software.

I already tried creating a boot disk using DiskMaker X 4b5 and the install file could not be found. Also went to the App store and found that the Mountain Lion Download is no longer available. My original install was an upgrade via download…I do not have the Mountain Lion install discs. I have an iMac, vintage 2011 with a 2.93 GHz Intel Core I7 with 12 MB Ram

Any further suggestions would be most appreciated. Thanks

iMac (27-inch Mid 2010), OS X Mountain Lion (10.8.5)

Posted on Sep 4, 2015 7:39 PM

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Answer 1

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Niel

Level 10

726,923 points

Sep 4, 2015 7:41 PM in response to Oceanget

Use the Disk Utility or a product such as Carbon Copy Cloner to create a bootable clone.

(132828)

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Answer 2

Oceanget Author

Level 1

5 points

Sep 4, 2015 11:04 PM in response to Niel

Hi Neil,

Thanks for the tip. I tried using Dick Utility just now. My iMac has two internal drives of which the start up disk is a 250GB SSD.When attempting to use it as the source drive in creating a disk image, I am receiving the following message:

"The startup disk can’t be used as a restore source.

To use this disk as a source, restart your computer using the recovery system, and open Disk Utility again."

Not sure how to do this. Please advise if you have the answer. I have an external Firewire Drive that I want to use as the destination drive for the disk image. Thanks.

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Answer 3

Oceanget Author

Level 1

5 points

Sep 5, 2015 5:22 AM in response to Oceanget

Hi Again. Thanks for pointing me in the right direction. I have followed your lead and am choosing to create a clone of the start up disc. Cheers & Thanks again.

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Answer 4

Sep 5, 2015 5:25 AM in response to Oceanget

If you have a TimeMachine backup, that is all you need to revert the Mac OS X, see:OS X Yosemite: Revert to a previous OS X version

Just turn TimeMachine off before doing the upgrade so you do not over-write the backup.

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Answer 5

Sep 5, 2015 5:27 AM in response to Oceanget

Which you already asked about in another thread:I want to upgrade from Mountain Lion (10.8.5) to Yosemite. However I need to create a way to reinstall Mountain Lion in the event that I cannot use FCP 7 Studio, Aperture 3.4.5 and other software. Any suggestions would be most appreciated. Thanks

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Answer 6

Eric Root

Level 10

684,039 points

Sep 5, 2015 8:12 AM in response to Oceanget

the install file could not be found. Also went to the App store and found that the Mountain Lion Download is no longer available.

Check the App Store Purchases tab. You should be able to download the installer from there.

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