Starting up in Mavericks from my portable hard drive ?

[Falkie2013]

I put Mavericks on my portable Buffalo drive so I could still run my old stuff under Mountain Lion.
I got it to work once, but how do I log out of Mountain Lion and have the computer restart in Mavericks and then if I want to back to Mountain Lion.
I restart the computer but it keeps starting up in OSX.6.8.

[onan]

I put Mavericks on my portable Buffalo drive so I could still run my old stuff under Mountain Lion.
I got it to work once, but how do I log out of Mountain Lion and have the computer restart in Mavericks and then if I want to back to Mountain Lion.
I restart the computer but it keeps starting up in OSX.6.8.

I dunno, but it sounds like a great next movie for Peter Jackson.

[jazmunda]

I put Mavericks on my portable Buffalo drive so I could still run my old stuff under Mountain Lion.
I got it to work once, but how do I log out of Mountain Lion and have the computer restart in Mavericks and then if I want to back to Mountain Lion.
I restart the computer but it keeps starting up in OSX.6.8.

You need an Apple Genius or as my wife calls them "Not My Husband".

[area51drone]

access: PERMISSION DENIED....and.....
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