Originally Posted By: MG2009
Hmmm . . .

I am trying to recall what I did when Yosemite was released. I know I downloaded and installed it on my 2011 MBPro AND made a bootable version of it on a flash drive.

I believe that I also installed Yosemite on the iMAC from the SAME flash drive.

I cannot say I did this for certain. However, if I had to download again from Apple to install Yosemite on the iMAC, I would have also made a flash drive of the OS X as I did with the MBPro - as is my habit with each new OS X release. Since I only have one flash drive with Yosemite, I figure I must have used it for both machines . . . otherwise I would have been compelled to make a second flash drive when I went to install Yosemite on the iMAC.

Of course, I may have lost all my marbles. grin

You should be able to test that by trying to boot your iMac with the flash drive and seeing what happens, i.e. if it boots...if it allows you to install.

Please let us know.

Thanks.

Edit: And if it boots the iMac, I suppose you ought to make sure that it still boots the MBP...just for good measure.

Last edited by artie505; 04/16/15 09:13 PM.
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