Yes, I shall do this. My Mac Pro was so old (one of the originals) that it would not support Mavericks onwards so it had to go earlier this year. I now have a MacBook Pro but linked to a Startech USB3 Dual Dock, so was able to clone to that and boot from it. I have several old SATA drives, so one of them will become the last clone of Mavericks before I update the SSD on the MBP to Yosemite.

Regards, Graham


Jason Davies <mailto:[email protected]>
29 November 2014 17:38
On 29 Nov 2014, at 14:33, Graham Street wrote:


If it's mission critical and/or you have a spare drive, I'd keep a clone of Mavericks all running nicely in a drawer for that time in three months you discover some weird glitch at 1 am before a deadline;)

I did this recently. I have a fraction of a bitcoin and realised the software no longer works, grabbed the nearest old clone and retrieved it to another address.

(Thing about having a Mac Pro is they last so many OSs, I have to be selective...I think I can go back to 10.6 and still boot;))

Graham Street <mailto:[email protected]>
29 November 2014 14:33
Thanks Jason - a good plan, and thanks for the suggestion. I cloned my hard drive and booted from that on USB3, and then updated to Yosemite for the tests. Despite all I read in advance, I managed to get CS3 versions of Photoshop, Fireworks and Illustrator all running.
Regards, Graham

Jason Davies <mailto:[email protected]>
27 November 2014 19:33
On 27 Nov 2014, at 18:00, Graham Street wrote:


I would update a clone and run from that with your usual workflows to see what happens;) It's usually some tiny thing that's broken in these upgrades that take you ages to find..

Graham Street <mailto:[email protected]>
27 November 2014 18:00
I'm thinking about the update from Mavericks to Yosemite but I wonder about the compatibility of some old Adobe CS3 apps - specifically Photoshop and Fireworks. So, I'm posting this in the hope someone's tried running these? Google searches prove inconclusive so far. I might decide to switch to Pixelmator but the latest version needs Yosemite (so 'catch 22')
Thanks, Graham

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