Can I upgrade from Mountain Lion to Yosemite if I didn't upgrade to Mavericks?

I didn't upgrade to Mavericks. Can I still upgrade to Yosemite from Mountain Lion? If not, where an I get a Mavericks?
Thanks!

Yes.

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I have just downloaded the upgrade from Mountain Lion to Yosemite. In the process i am now unable to gain access to iTunes. The app on desktop no longer works and the install is not able to be opened.

I Have downloaded the upgrade from Mountain Lion to Yosemite. In thee process of so doing I have lost access to iTunes.
The app on desktop no longer opens the program and having downloaded and installed as per Apple instructions, can not make a connection.

Hi, drjbuchanan.
Thank you for visiting Apple Support Communities.
Here are some troubleshooting steps that I would recommend going through when experiencing this issue.
iTunes: Troubleshooting issues with third-party iTunes plug-ins
http://support.apple.com/en-us/ts3430
Troubleshooting iTunes installation on Mac OS X
http://support.apple.com/en-us/ht2311
Cheers,
Jason H.

I upgraded from mountain lion to the OS X Mavericks and my EndNote X5 can not open.I re-installed but cannot open. I keep on getting the message "Unable to load EndNote X5: Applications/EndNote X5/EndNote X5.app/Contents/Encore.bundle" can anyone help?

I upgraded from mountain lion to the OS X Mavericks and my EndNote X5 can not open.I re-installed it but cannot open. I keep on getting the message "Unable to load EndNote X5: Applications/EndNote X5/EndNote X5.app/Contents/Encore.bundle" can anyone help?

Please take each of the following steps that you haven't already tried. Test after each one. Back up all data before making any changes.
1. Make sure that the right volume is selected in the Startup Disk preference pane.
2. Disconnect all wired peripherals except those needed to start up. If there's no change, reconnect them
3. Reset the System Management Controller.
4. Reset the PRAM.
5. Start up in safe mode, then restart as usual. If you can't start in safe mode—for instance, if FileVault is active—then triple-click anywhere in the line below on this page to select it:
/var/folders
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu. A Finder window should open with an item named "folders" selected. Move the selected item to the Trash. You'll be prompted for your administrator password. Restart and empty the Trash.

I have upgraded from Mountain Lion to Mavericks, since then my Adobe Flash Player don't want to work?

Hi, can anybody help me please, i have upgraded from Mountain Lion to Mavericks, since then my Adobe flash player don't want to work.
I clicked on update and downloaded the update from Adobe and installed it.
Every time i get an error saying - "that this wasn't downloaded from App Store".
i can not find it in App Store.
What must i do?

Try this: in your Utilities folder launch Adobe Flash Player Install Manager and run it to completely uninstall Flash. Then go to http://get.adobe.com/flashplayer/ and download Flash
Once downloaded, double-click to open it and run the installer. If you get a message saying the file can't be opened, or similar, Control+click or right click and select 'open' and should then be able to proceed to install it.

Mavericks upgrade from Mountain Lion deletes all user accounts

This is a lesson for upgrading too early (and too eagerly).
Today I tried the Mavericks upgrade from Mountain Lion on my 2007 Macbook Pro, after going through all the pre-installation/pre-upgrade checklists.
I don't think I have gone from a very high to a down low in such a short space of time. I really wanted to move on from Mountain Lion and when the installer finished the upgrade to Mavericks and re-started my MBP, I was super excited. When the restart completed and I was presented with the login prompt, I tried entering my user name and password. First time, it shaked on the password... OK, you'd think that is a typo. Re-entering the password... same thing.
You can imagine what ensued. After entering my password v-e-r-y slowly many times, I started realising that something went very VERY wrong.
Just for information, I used two different user accounts on my MBP under Mountain Lion. The one account had administrative priviledges and was only used for installing applications and a few other administrative tasks. Then I have a second personal account, which does not have administrative priviledges and is the account I use daily for Mail, Safari, iTunes, programming etc.
None of those accounts worked under Mountain Lion. Basically, there is no way in.
I then proceeded to boot with the startup option Cmd + S (command-line access). Once that was completed, I was in as root and checked the /etc/passwd. None of the user accounts were there. I was only able to find two user accounts: root and nobody; and a long list of user account that started with an underscore (I think these are some sort of esoteric user accounts). So, it appears that the Mavericks upgrade did not accurately bring over the user account information from my Mountail Lion installation.
Then, I went into the /Users directory and there I could see the home directories for all the users as they were defined under Mountain Lion. The contents were intact too.
It seems to me that the Mavericks upgrade from my Mountain Lion forgot to bring over the user accounts but it did preserve the contents of all the users' home directories.
Unless anyone can spot some sort of user error here (please let me know), I am heading back to Mountain Lion pretty swiftly. Otherwise, I suspect there is a bug in the Mavericks installer.
Any assistance is appreciated.

The reason this occurred is a mystery and has not been commonly reported. Consider the following. It may or may not help. You should probably print these instructions before proceeding.
Boot Single User mode again and do the following:
(You can skip the first step. It will check your boot volume for errors and correct what it can. If there were errors the installer should not have proceeded, but the possibility exists that directory corruption may have occurred during installation. That seems unlikely to me but could explain what went wrong.)
In Single User Mode:
At the :/ root# prompt, type fsck -fy and press Return or Enter. It will take a few moments to complete. If you are concerned that nothing is happening just press the Return key until you see the :/ root# prompt again.
Once the disk check is complete and the prompt returns, type mount -uw / and press Return / Enter.
Type launchctl load /System/Library/LaunchDaemons/com.apple.opendirectoryd.plist and press Enter. If you get an error message you may ignore it.
Type ls /Users and press Enter. All of the usernames on the computer will be listed, which is helpful if you don’t know or remember what these are.
Type dscl . passwd /Users/username password while replacing username with one of the users displayed in the previous step and replacing password with the new password of your choice. Press Enter. You will likely get an error message about a file or directory not being found. You may ignore this.
Type reboot and press Enter.

Upgrading from Mountain lion

I am upgrading from Mountain Lion to Mavericks. I tried to install Mavericks from the AppStore, everything went OK (download, etc), until the system had to reboot and it was when everything failed. The system couldn't start, it stalled when the apple logo appeared, but the mouse was resposive (really weird). I tried several things cleaning the PRAM, etc, and there was no booting, or alternative to start the system. After trying all the different combinations to boot and see no change, I realised that the left option key somehow was unresposive at startup, and that was one of the identified problems. However, I manage to use the right option key and I was be able to boot from an external hardrive using a recovery partition from a clone of my system. I restored the system with my back-up from Time Machine of 10.8.5. I have a mid 2010 MacBook Pro, where I have a SSD drive. My drive is OK and It was checked prior to installation of the system etc. Any Ideas on how to able to install 10.9, or an expected release date of a new installer? It seems this has been happening to a lot of people.

OK,
I did the following (I did not purchase DiskWarrior or any other 3rd Party software)
Backed up to an Time Machine Drive
Reset the EPROM (zapped it or whatever they kids these days are calling it)
Booted off a Mavericks USB stick.
Ran Repair Disk & Repair Permissions
Installed Mavericks
Worked fine, took a while but up and running.
Not sure what the HD damage error was but it's working away on my old work horse (17" Late 2007 MacBook Pro).
Eoin
<Apologies for post the same response in two place but I had made a comment here and was following another thread, Good Luck!)

I just upgraded from Mountain Lion to Maverick (10.9.3) and Adobe CC is listed as incompatible with this OS. What do I need to do to make it work again?

I just upgraded from Mountain Lion to Maverick (10.9.3) and Adobe CC is listed as incompatible with this OS. What do I need to do to make it work again? Just a patch/update or do I need to uninstall and install?

antoniobesteban wrote:
I just upgraded from Mountain Lion to Maverick (10.9.3) and Adobe CC is listed as incompatible with this OS.
Where are you seeing that information? Got a link?
According to the Adobe website: Mac OS X Mavericks (10.9) compatibility FAQs | CC, CS6, Acrobat
Plenty of people, including me, are currently running CC on Mavericks.

There are too many questions "like" mine, so here it is: I updated from Mountain Lion to Yosemite, I can't open iphoto 9.1.5, I am directed to the app store, I "accept" iphoto upgrade and enter my credentials, but no update occurs. :-(

Attempting iPhoto upgrade from 9.1.5 to 9.5.

How many questions like yours should there be? What exactly do you expect the volenteers here to do about what you personally consider "too many questions"?
To move to iphoto 9.6 (required for Yosemite) You must log in to the App store using the Apple ID that was used to set up the compter (or purchase the application if it was purchased later), backup your iPhoto library and then download and install iPhoto 9.6 from the App store
If that is not working then you must contact App store suport - link is on the right of the App store window
LN

Upgrading Server directly from Mountain Lion to Yosemite?-

Hello all,
I have a Mac Mini running Mountain Lion (10.8.5) and Server (2.2), hosting a small private webserver (PHP + MySQL), VPN, some LaunchAgents cron jobs, and file sharing service. I'd like to upgrade it directly to Yosemite and the latest Server app (4.0).
However I'm not an expert in server stuff, and I'd like to be sure that the direct upgrade will correctly migrate all my current Server settings. I've fiddled with the settings over time (including files like httpd.conf or php.ini, or adding self-signed SSL certificates) and I don't think I could easily "recreate" them from scratch if something went wrong…
So here are some questions:
"Software update" is suggesting me to upgrade to Yosemite, which is fine, but does not suggest me to upgrade Server too. Is this normal? I know that Server is a paid upgrade, but I'm surprised there is no automated upgrade process in my case. Also, "About my Mac" shows my OS version as simply "10.8.5", without any "Server" mention, is this normal too?
If everything above is normal, I suppose that the safe and normal way is upgrading to Yosemite, and then buying normally Server 4.0 in the Mac App Store?
In case something goes wrong, is there a way to "export" all Server 2.2 settings in order to import them later in Server 4.0?
My Mac Mini is headless, managed through Screen Sharing on an iMac. Can the upgrade to Yosemite be done without an actual monitor? In other words, will the "Screen sharing" service on the Mac Mini still be enabled? If not, will the "target display mode" work, using the iMac screen and a Thunderbolt cable?
Any help is greatly appreciated. Thanks!

Technically, you can downgrade if you have the following:
Your computer must be elligible to run Mountain Lion. If your computer came with Mavericks or Yosemite out of the box, you can forget it.
You need an already existing Mountain Lion installer file. If you still have that somewhere, for example in your Applications folder, or anywhere else, it's usable- note that it needs to be originally downloaded with your own Apple ID and password. If you made a Mountain Lion USB installer or DVD back then that would work too. If your Time Machine back-ups go back to the days of Mountain Lion or Lion you could check your Applications folder from inside Time Machine and restore it to your computer.
To not have data loss you need a Time Machine back-up that goes back to when you were still running Mountain Lion. Please note that this will revert your data to exactly the date that you choose. If you installed Mavericks 2 months ago, you will loose 2 months worth of data.

Just need Mavericks base installer to upgrade from Mountain Lion. Company hasn't approved Yosemite (3 weeks).

A month ago, I could have just downloaded the upgrade for Mt. Lion to Mavericks. Now, I can't find it. All there seems to be is 10.9. to 10.9.10 updates, no base Mavericks. All other update requests, questions, and queries at the Apple Store and iTunes go right to Yosemite. Even my Mac obnoxiously says I need to upgrade to Yosemite (like it did for Mavericks, I can't turn the upgrade notification off). I need Mavericks.
My company won't allow upgrading to Yosemite for at least another month, if not longer. I want to upgrade now to Mavericks in the interim, and I can't because I can't fine an installer. I can't do Bit Torrent either, so can't go to any "free" sites.
Stu

I can't do Bit Torrent either, so can't go to any "free" sites.
You are lucky. Downloading from torrents often downloads malware and in this case would be illegal.

Recently forced to update Macbook Pro (Mid 2012) from Mountain Lion to Yosemite. Performance is awful. Is there any way to change back/downgrade?

(Sorry if this isn't the correct category)
I have always been a fan of Apple and almost always love Firmware updates. OS X 10.9 and 10.10, however, I do not like.
I recently spent a lot of time going through all the troubleshooting steps Apple Support makes you go through before I called them to get my problems fixed as quickly as possible (no point wasting both our time). I had encountered scepticism in the past that maybe my problems were because I was running 10.8 and so to prove that it was in fact a hardware problem, I updated. AppleCare finally agreed to replace my logic board (for a second time) which fixed the performance problems I was having. The process took hours and I ended up being right the entire time.
I originally had my own little reasons for not wanting to update but decided I would try Yosemite since I didn't really have much of a choice at this point. I have now given it a good month and have concluded that this OS version is completely useless to me and near unusable.
A small list of the more annoying problems:
Photoshop crashes and/or needs restarting constantly
my Wacom Tablet doesn't function properly (or at all
my computer lags when I open Dashboard or App Exposé
I get the spinning beach ball for a good five seconds at times almost exclusively when using a feature of my computer such as Finder, Pages, iTunes, etc.
computer feels like it is lacking in specs
Additionally, there are a dozen little things about the way Yosemite behaves and looks that I find hard to ignore. I WOULD ignore these things if my software worked properly.
Yes, I did try reinstalling programs and drivers; no it didn't help.
I paid for a computer running Mountain Lion because I knew I could do my art on it, play the games I wanted, and do word processing the way I liked. Is there any way at all (no matter how long or difficult a process) to downgrade back to 10.8? And specifically without voiding my warranty?
I really don't want to be forced back to buying Windows but I spent a lot of money on something that is now not functioning in a way I can use it ):
TL;DR
had 10.8. needed to update to 10.10 so AppleCare would believe that I had hardware problems. Hardware is now replaced and I need 10.8 back without voiding my warranty.

GrandMasterB wrote:
My problem is the laptop came with Mountain Lion on it and I spent 2.5 DAYS in recovery trying to redownload the OS to install.
snip
That took about an hour and after the recovery finally opened I was prompted with downloading "Lion" instead of "Mountain Lion" I proceeded. It installed overnight. Now my Macbook has Lion on it and the only way to get Mountain Lion back is in the App Store for $20....
This does not make much sense if the Laptop had Mountain Lion on it from new. Internet Recovery downloads the current version of the OS that the machine was built with, are you sure that you did not upgrade to ML from Lion?
If you did you can redownload Mountain Lion for no charge.

Went from Mountain Lion to Yosemite on 2009 MacBook Pro. Safari now randomly shuts down; Word doesn't work properly; iPhoto will not upload pics from iPhone; EVERYTHING is horribly slow. How to I go back to Mountain Lion?

Is there a way to go back to Mountain Lion after updating to Yosemite? Yosemite has caused nothing but problems in multiple programs. Mountain Lion ran fine. Not sure why I even updated. I am NOT a computer guru so instructions I have read for the many Yosemite fixes blow my mind. Should I be taking my MacBook Pro to the Genius Bar at the nearest Apple Store (2 hours away)? I have been a Mac user and lover for many years and am SO frustrated and disappointed in all of it right now. Please advise on what a non-tech frustrated Mac user can do.

Technically, you can downgrade if you have the following:
Your computer must be elligible to run Mountain Lion. If your computer came with Mavericks or Yosemite out of the box, you can forget it.
You need an already existing Mountain Lion installer file. If you still have that somewhere, for example in your Applications folder, or anywhere else, it's usable- note that it needs to be originally downloaded with your own Apple ID and password. If you made a Mountain Lion USB installer or DVD back then that would work too. If your Time Machine back-ups go back to the days of Mountain Lion or Lion you could check your Applications folder from inside Time Machine and restore it to your computer.
To not have data loss you need a Time Machine back-up that goes back to when you were still running Mountain Lion. Please note that this will revert your data to exactly the date that you choose. If you installed Mavericks 2 months ago, you will loose 2 months worth of data.

Just upgraded from Mountain Lion and now some programmes do not work. How to go back to Mountain Lion

Just upgraded to Yosemite from Moutain Lion. Want to go back as it refuses to run some programmes

Yosemite/ OS X Mavericks: Revert to a previous OS X version

Can I downgrade from Mountain Lion from a Macbook with Mountain Lion as the pre-installed OSx?

I had to get a new Macbook during my last semester due to my 13" Macbook Pro dying on me. My new 15" Macbook Pro came with Mountain Lion on it and I am not a huge fan of it. I am wanting to revert to Lion if that is possible for my Macbook. I do have a number of back ups of my 13" Macbook with Lion on it, but I tried it before using cmnd /r and it couldn't go back to my Lion back ups. I am not sure if I just did something wrong while I was trying to use my back up or if Macbooks with ML as the pre-installed OSx just can't go backwards.
Any help would be much appreciated

you can't revert/ downgrade diffrent OS version.the option only upgrade.
solutions for this kind problem.
fresh install lion (use fresh installer version,you can buy or download lion's master)

Can I NetBoot from Mountain Lion to a Lion Image?

I have a Mac Mini lab. Lion Server with Lion NetBoot Image being served to several Mac Minis running Lion. I am getting new Mac Minis that have Mountaion Lion. Will I be able to use my same Lion NetBoot Image for the new Mountain Lion Minis?

Apple have just updated the Mac mini range although I can hardly see any difference personally . However the consequence is that it is very likely the new Mac mini model will not boot successfully from a Lion image. It would be possible however to have a Lion Server provide a Mountain Lion netboot image, I do this with DeployStudio successfully on a Lion server and server both Lion and Mountain Lion images.

Can I upgrade from Mountain Lion to Yosemite if I didn't upgrade to Mavericks?

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