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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Level 1

5 points

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

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 11:32 PM

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Answer 1

petermac87

Level 5

7,447 points

Sep 4, 2015 11:34 PM in response to Oceanget

Just make a complete bootable backup of you system as it is before updating.

Pete

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Answer 2

Oceanget Author

Level 1

5 points

Sep 5, 2015 4:28 AM in response to petermac87

Hi Pete, Thanks for the reply. I use Time Machine for backup. However, I am unclear about how to create a "complete bootable back-up of my system". Are you aware of there being available a document (link?) that lists the procedure step by step? Thanks Again.

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Answer 3

arthur

Level 5

5,242 points

Sep 5, 2015 5:15 AM in response to Oceanget

Peter is referring to an app like Carbon Copy Cloner. https://bombich.com/ You'll find all the documentation you'll need there. The advantage of using CCC over Time Machine is that you can boot from the CCC clone. Then you can clone the clone back to your HD. Some people prefer that.

I use Time Machine. If you already have a backup of your HD with Time Machine you're all set. It's very easy to restore from that backup if you need to.

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Answer 4

Oceanget Author

Level 1

5 points

Sep 5, 2015 5:20 AM in response to arthur

Thanks for pointing me in the right direction. I have visited the sight and see that it will provide me the options needed. Cheers & thanks again.

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Answer 5

Sep 5, 2015 5:23 AM in response to Oceanget

You do not need any more material than is already in your TimeMachine backup to revert back...but, be sure to turn TimeMachine off before upgrading so you do not over-write the backup copy:OS X Yosemite: Revert to a previous OS X version

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Answer 6

Barney-15E

Level 10

112,818 points

Sep 5, 2015 5:41 AM in response to Oceanget

Oceanget wrote:

Also went to the App store and found that the Mountain Lion Download is no longer available.

If you previously upgraded to Mountain Lion, then the Mountain Lion installer will be in the Purchases tab of the App Store.

If it is not there, check the Hidden purchases in your Account on the App Store.

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Answer 7

Oceanget Author

Level 1

5 points

Sep 8, 2015 1:58 PM in response to Barney-15E

Thanks. I resolved the issue by setting up a clone bootable disk to try out Yosemite with.I appreciate your response. Cheers.

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