boot off external HD

Question

Level 4

1,086 points

I have a new iMac Late 2014 retina 27 inch , it came with 10.2.2

I need Mountain Lion to use iMovie HD 6.0.3.

I have an external HD partition with Mountain Lion installed, and I cannot boot up from the external hard drive in Mountain Lion or 10.9 partition.

My last iMac had no problem booting from the external.

Does anybody have a workaround where I can have this iMac run Mountain Lion?

iMac with Retina 5K display, OS X Yosemite (10.10.2)

Posted on Feb 28, 2015 2:38 PM

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Answer 1

Level 10

726,719 points

No, except by running the older OS inside a product such as VirtualBox or Parallels Desktop.

(123282)

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Answer 2

Level 4

1,086 points

I have no experience with VirtualBox - Will it run on an external drive?

Will it run iMovie HD 6.0.3 ?

thanks

Neal

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Answer 3

Level 10

726,719 points

1. Yes.

2. Ask the people who make it.

(123345)

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