I want to upgrade all my home computers (4 macbooks running 10.8) to the new Mavericks OS.   I have a download cap, so i dont want to download it 4 times. How can i download it once and install it on all computers?
58213
I have three Macs I want to upgrade to Mavericks.  Is there a way of re-using the install files, so I don't have to do three separate 5gb downloads?
77581
My MBA 2012 with OS X 10.9.4 Mavericks won't boot anymore - it simply freezes after the initial jingle. I already tried resetting NVRAM and SMC, but to no avail. I don't have any time machine backups.  However, I still have a disc image of Mavericks sitting on an external hard drive, a USB stick and access to a notebook with Windows 7.   I haven't yet found any tutorial on how to create a bootable USB drive on Windows in order to reinstall OS X on my beloved Macbook Air.  Any help would be greatly appreciated!
2407
My problem is that my Mac starts up to the &quot;El Capitan&quot; installer. After restarting several times, OS X is still on screen telling me that &quot;no packages were eligible for install&quot;. Can someone help please, and can you bear in mind that I’m not technically minded so keep instruction in simple terms.
30019
I've already installed macOS Sierra. But I've also performed a "general" cleaning and I suspect some files were gone. Now the whole system is slow, some things doesn't behave the way they used to. Is it possible to download again macOS Sierra from AppStore and simple reinstall it? I mean, install macOS Sierra over macOS Sierra that is already up and running (not so well...). Thanks a lot for your help.
103737
I've been learning the shell for a few weeks and have installed several packages. I know/remember what some of them are, like oh-my-zsh and emacs 24 (which was a nightmare to upgrade to), but not sure sure about what else. I've used different methods like curl, wget and Macports.  My question is, if and when I want to do a clean installation of MacOS, how do I backup or script a fresh installation of these packages? In other words, when I do a new install of MacOS I won't be restoring from Time Machine using Migration Assistant: rather I'll install the system and manually restore files. How do I know the installation paths and dependancies of what I've installed in my previous installation using the command line? Is there a txt file somewhere that the system maintains to keep track of what has been installed?  (MacOS 10.8.2)
76866
When I upgraded from 18.10 to 19.04, and again when I upgraded from 19.04 to 19.10, I had to manually reinstall all of the packages I installed through dpkg, apt, etc. (I do not recall the precise details of how I went about either upgrade.) Is there a less painful route to upgrade Ubuntu 19.10 to 20.04?  Closely related: When I was a macOS user and upgraded my system software, I could export a list of installed Mac Ports, and then reinstall after the system upgrade using that exported list. Is there a similar kind of functionality for dpkg or apt? I would find this kind of solution to be "less painful" in case there is not a simple and direct way to accomplish an upgrade to 20.04 without losing installed packages. :)
4526
After preforming a Mavericks-Mavericks migration using Migration Assistant, I have a "Local Items" Keychain on my new machine in which many (perhaps most) items are out of date (using old passwords), and some are missing altogether. While I have access to a copy of the entire contents of the ~/Library/Keychains/ directory from my old machine, which presumably contains all the information I'm missing, I see no way of importing that information into my new machine.  How can I import the "Local Items" from my old Keychain into the Keychain on my new machine?
3113
I am currently using Ubuntu 10.04. I know there is a 10.10 release, but can I upgrade directly to 11.04? Could you walk me through the steps please?
34310
I just need some advice on upgrading from 12.10 to 13.04.  What happens when I upgrade? Do my files, settings, and internet bookmarks stay intact? I can't find any resources to help me with this.
89954
I recently switched from Windows to Mac. Steam says I have fewer Mac specific games than total games and it should be an equal amount unless you can only download, install, and play once from your account. I thought I bought it so that it would work across all operating systems. If this is true, is there a work around or a discount for re-purchasing for the other OSes?
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I am trying to download Xcode from the App Store, but it says that I have to have a newer version of macOS. But I don't have enough space on my computer to upgrade. Its like 8 gigs or something like that and if I only could download Xcode that was compatible with macOS Sierra that would be nice.
104010
I have some applications purchased through the Mac App Store, and I have two Macs.  Presently, if I buy an application on my Mac mini, I just go and launch the App Store on my MacBook Air, and then download the application again from "Purchases".  And vice-versa if I bought on the Air first.  Similarly, I apply updates for each computer separately. I expect this is how most people do it.  However, this practice consumes bandwidth. For small applications, it isn't a problem.  But what about big ones?  Say, the new Xcode, or a large game?  What I'm getting at:  Is it legal and is there a way to copy an application, myself, from one of my licensed computers to another of my licensed computers?  By "licensed", I mean both of my Macs access the Mac App Store with the same iTunes account, and therefore have access to the same apps, anyway.  I'm looking at reducing Internet bandwidth consumed, not circumvent license restrictions.  Might a simple file copy of the application folder work?  Or, is something like this not supported and I just need to accept that buying apps this way will necessarily consume N * download size worth of bandwidth for each purchase and update?  Consider, with iOS devices this isn't an issue, as long as you update one device, sync to iTunes, and then sync the other devices to iTunes&ndash; they'll get the updates without re-downloading.  How to do something like this for Macs?
119691
Current  enables one to upgrade to macOS Mojave from a stable release, but I want to try out a fresh installation instead of upgrading with previous data, so that I can assess it better.  I've downloaded an application named "macOS Mojave Beta" from the App Store, and running it would presumably result in an upgrade. Now I wonder what to do next. Would  and booting from it be a good idea, when I'm working with a Beta version?
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I know that there are three command to update and then upgrade the whole system, these are:        sudo apt-get update        # Fetches the list of available updates   sudo apt-get upgrade       # Strictly upgrades the current packages   sudo apt-get dist-upgrade  # Installs updates (new ones)      Is there a super-upgrade command that combines all these commands to one?
93927
Let's say you have 24 computers. They all have the same Linux or Unix distro on them, with the exact same configuration, but with different users. Is there a way to be able to do the exact same thing on all of them with one command? For example I'm running Lubuntu 14.04 and 14.10 comes out and I want to upgrade all of them while only running sudo apt-get update &amp;&amp; sudo apt-get upgrade &amp;&amp; sudo apt-get dist-upgrade once? Is there a software that would allow me to do that?
18724
The answer of  explains that it is to install apps bought on the Mac App Store on multiple computers.  My problem is a little bit different. I moved to another country and I had to change the country also in my iTunes profile, due to my new credit card. As a result my iTunes store, App Store and Mac App Store are now associated to the new country.  How can I access and download my purchased Apps on my new MacBook Pro?  Probably one solution would be to change again the country, but it wouldn't be optimal.
4678
Sometimes it's hard to search for older versions of macOS &amp; OS X  on the App Store.  This is an attempt to provide the canonical QA for this issue, as per the Meta QA -  I expect it to be modified over time to hopefully become a complete information resource.  How can I get any older version of a Mac OS to be able to run as a VM, or to reinstall on my Mac?