I think I would like to install Mavericks over Snow Leopard on my Intel Core 2 Duo MacBook Pro because I imagine it is more stable than Yosimite and I'm doing a lot of development on it, for which I want Port Tree (Fink in my case) packages to be available for items like Python, PostgreSQL, etc.  But Mavericks doesn't seem to be available on the App store anymore. Tried downloading from CNET, but all I seemed to be finding was an update.  I am tempted to just install Yosemite and would love to get some input.
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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?
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(quote from chat)     Got a PPA on launchpad for source packages for an IRC bot project I'm associated with (since its all the intermediate packaging for the stuff between releases, it's classified as an "experimental" PPA). Question: I've already packaged the stuff for a lucid build. Any clue how I'd be able to create the same packaging, except package it for maverick, and put it up to the same PPA that I've put the lucid packaging to?
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This question seems to have been asked  already. My IT department installed the OS so I don't know how to register it properly but I do have root access. Is there a way to get the same packages using the CentOS repositories maybe? I'd also like to install IceWM but without a compiler I can't even build it myself.
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I need Mac OS X 10.6.8 (Snow Leopard) in order to work with some legacy software and I want to buy new Mac Mini computer.  Is it possible to install this OS on a new Mac Mini or it's not compatible with it?  If so, what is the latest model of Mac Mini that I can use in this scenario?
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I am going to upgrade my MacBook Pro hard-drive, but before doing so I'm trying to figure out how to restore OS X on it. My DVD drive doesn't work so I cannot re-install from the DVD.  I have a recent Time Machine backup, is that enough to restore the OS? And in that case, what would be the procedure? Also, in case the Time Machine restoration fails, is there any way to re-install OS X from a USB or external hard-drive? Any suggestion would be much appreciated.
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I was wondering if it's safe to upgrade Maverick Meerkat to Natty (I believe I'm fully aware of the bugginess of Natty at the moment). The only thing that's of concern is altering of other partitions during the install.   Will it wipe any partitions out?
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Is there a list of officially supported Macs for OS X El Capitan?  I ask to get ready if any hardware which is supported on Yosemite is not supported by El Capitan?
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I noticed Xcode has released a (non-snapshot) .   I looked for an article on how to install it and I couldnt find anything.  Can anyone advise how to do this?
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I'm looking to buy an older mac mini (v1.1) CoreDuo 1.66Ghz 2Gb DDR2, 80Gb HD.  My research shows the original OS was Mac OS X 10.4.11.  So my question is: if i will upgrade my CPU from T2300 to T7200 (2.0Ghz,Core2Duo) and the  so I can increase the ram from 2 to 4 Gb.  Will this configuration work for lion (Yes, i know 1.1 is not compatible with installer)?  I mean installed lion 10.7.5 will work good like now works Tiger and other soft like ilife 09, ableton 8, reason 5, audacity? or it will lagging?  also i need lion for my wifi adapter TP-LINK TL-WN7722N (i think i can startup this adapter with atheros fix or other kexts)
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I've never supported Apple in any way, but I like their hardware. As I've just purchased and got working a nice Apple wireless keyboard (bought second-hand!), I'm curious about the possibility of buying a second-hand MacBook and installing Ubuntu on it.   What, of what's important, isn't working? Notably, I do Flash Player development from time to time, so I do at the very least need to get a 32-bit debug player installed. (I usually run 64-bit, so I'm familiar with having to tweak things to get it all working properly) I'd also need to be able to play DVDs with CSS, run Google Chrome, etc. Is it fairly similar in capabilities as a non-Apple computer as far as what I can use? It seems that there's a different architecture used, namely PowerPC, and I don't know what this means to me as an end-user.   Can anyone recommend me for or against installing Ubuntu on MacBookPro?
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If I buy an app on through the Mac App Store, can I install it on both of my Macs?  I use the same iTunes account on both of them.
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I have finally successfully managed to install Mac OS X in a virtual machine on my Windows 7 laptop using VirtualBox and a tutorial from Lifehacker.  Performance is very slow, with Mountain Lion reporting that it is seeing just 4MB video memory (I didn't manage to load the Intel HD3000 driver). Youtube is essentially unplayable, with even the audio potion stuttering. That said, the interface and general UI is pretty acceptable.  Even with such slow performance, does it make sense to download and develop with Xcode? I am allocating 3GB of RAM. What would performance be like under those conditions?
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I have just looked on MacRumours and found out that Apple have stopped support for installing Windows 7  with BootCamp on the 2015 MacBooks (Air and Pro) (). Since I am going to get the new 12" MacBook I am guessing that too doesn't support Windows 7 using bootcamp.   Since Apple are stopping the drivers for the 2015 models as well, is there still a way to install Windows 7 on the 2015 versions of the MacBook? (I sometimes need Windows 7 on my Mac for college)  Edit  Thank you for the replies.  I ended up getting the MacBook Pro since they didn't have any MacBooks in store. Since I have the MacBook Pro I can now run Windows 7 in a virtual machine (as suggested by you) because I do not have heat and performance issues.
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My question is actually fairly simple: is there any way i could run windows programs (for example PC games) on my iMac? (i am currently running OSX Snow Leopard). I know about things like VirtualBox and Parallels to run windows itself, but is there a Mac application that will allow me to run .exe programs and the like?
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I want to install new software that has these two versions, and I need to know which one to install.  How can I tell the 32 or 64 bit capabilities of my Mac?
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On my Macbook Air 10.9.2 without crashing the current setup, how can i install as dual boot: Ubuntu 14.04 LTS ? (can anyone please advise some step by step please)
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Macbook Pro 13" 2015 with OS X Yosemite on board. I've been trying to install OS X El Capitan, but always get the following message:  "This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading."  By the way this is not a date time issue, date is correct on my computer.    How can I fix this? Who knows the solution, please help.