Hi, I did some testing using this kind of scenario. Your simple answer isn't exactly the right answer. True, when you go to Software Update when running from the external, it only seems to want to update apps, but not the actual OS. What I did to get around this, was, while running from MacOS on the external, eject any other volumes. So, navigate to the internal HD, then press cmd-e to eject it. Now, if you choose to run Software Update, whether on an external or internal HD, the updates will appear and be installable. After the updates are done, you can either re-mount the ejected HD using Disk Utility or restart your Mac and it will be visible again. I tend to have my Finder Prefs set to show connected everything on the Desktop as that's what I'm used to and I like accessing them from there instead of the Sidebar. I imagine that you are able to eject specific HD's from the Sidebar as well, I just don't use that method.
HTH. Later... Tim Kilburn Fort McMurray, AB Canada On 2013-06-17, at 9:23 AM, Mark Furness <[email protected]> wrote: > I have Lion on my internal drive and "mountain Lion" on an external. > I can go to properties and my I Mac to start in either OS and it does. > My question is why can I not update my mountain Lion but can the Lion? > > A simple answer is you can not on a external. > i will be purchasing Maverick. Should all Os's be on the internal drive? > > Thank you for all your explanations and help to this confused user! > > -- > You received this message because you are subscribed to the Google Groups > "MacVisionaries" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/macvisionaries. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/macvisionaries. For more options, visit https://groups.google.com/groups/opt_out.
