Is it possible to uninstall OS X Yosemite?

Is it possible to uninstall OS X Yosemite?  I recently installed it on my older iMac and now my computer runs at about half the speed it did previously.  Before the installation, it was just as fast as the day I purchased it.

MichelPM is correct however wouldn't you rather trouble shoot the issue to see if you can get your performance back?

Similar Messages

  • Is it possible to uninstall yosemite and reload maverick

    is it possible to uninstall the operating system yosemite, and reinstall the maverick operating system

    If you were wise you would consider other options just besides getting rid of Leopard and throwing it away. First, you could wait until Apple releases OS 10.5.1, then install and update to it. This might help take care of some problems. You could dual boot OS 10.4.10 and 10.5 as long as you have the OS 10.4 full install Disk and the OS 10.5 full install disk. I personally will wait until at least Christmas time before I install Leopard. New OS's are always full of bugs. On the Microsoft side, I've read where Windows Vista is still having major problems and is taking a long time to become widely used. These problems take time to fix. When Windows XP came out nobody would upgrade to it because of all it's bugs, now Windows XP is considered the standard on PCs. Mac OS 10.4 was also full of bugs at first, but now we talk about how rock solid it is. Simply give Apple time to fix these problems.

  • How do you uninstall OS X Yosemite?

    I have recently installed the new OS X Yosemite. It's nice, however, I miss my mavericks system. How do I uninstall OS X Yosemite and back to Mavericks? I have a macbook pro w/ retina, and I think I have the OS X Yosemite 10.10 because it is asking me to update to 10.10.1.

    Presently,  you cannot reinstall Mavericks because Apple does not permit it. What you can do is reinstall Mavericks provided you have retained a backup of your Mavericks system that you can restore or you saved the Mavericks installer when you first upgraded to Mavericks. Otherwise, you can reinstall the system that came pre-installed on your computer when it was new:
    Install OS X Using Internet Recovery
    Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
    Boot to the Internet Recovery HD:
    Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.
    Partition and Format the hard drive:
    Select Disk Utility from the main menu and click on the Continue button.
    After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
    Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.
    Reinstall OS X: Select Reinstall OS X and click on the Install button. Be sure to select the correct drive to use if you have more than one.
    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
    This should restore the version of OS X originally pre-installed on the computer.

  • I updated Xcode 5 to Xcode 6.0.1. It messed up my previous apps and i don't know how to fix it. Is it possible to uninstall Xcode 6 and go back to Xcode 5?

    Hello,
    I updated Xcode 5 to Xcode 6.0.1. It messed up my previous apps and i don't know how to fix it. Is it possible to uninstall Xcode 6 and go back to Xcode 5?

    I found this solution http://objcsharp.wordpress.com/2014/09/21/how-to-get-back-the-ios-7-sdk-after-up grading-to-xcode-6/

  • I GIVE UP!  Is it possible to uninstall Leopard and go back to Tiger?

    I am ready to give up for now. Is it possible to uninstall and go back to Tiger?

    If you were wise you would consider other options just besides getting rid of Leopard and throwing it away. First, you could wait until Apple releases OS 10.5.1, then install and update to it. This might help take care of some problems. You could dual boot OS 10.4.10 and 10.5 as long as you have the OS 10.4 full install Disk and the OS 10.5 full install disk. I personally will wait until at least Christmas time before I install Leopard. New OS's are always full of bugs. On the Microsoft side, I've read where Windows Vista is still having major problems and is taking a long time to become widely used. These problems take time to fix. When Windows XP came out nobody would upgrade to it because of all it's bugs, now Windows XP is considered the standard on PCs. Mac OS 10.4 was also full of bugs at first, but now we talk about how rock solid it is. Simply give Apple time to fix these problems.

  • Since installing Yosemite my Quarkxpress 10 is not running correctly. Too slow or crashes. How do I uninstall Os X Yosemite without losing all of my designs?

    Since installing Yosemite my Quarkxpress 10 is not running correctly. Too slow or crashes. How do I uninstall Os X Yosemite without losing all of my designs?

    Thank you Thomas
    First, for changing my question to the right forum. I am new on this and wasn't aware I was in the wrong forum.
    Secondly, even though my initial question is not answered as in: I just want to remove Classic, what you say is right. I think now, after writing my long question and seeing your answers, that I should start from scratch.
    To answer your question, I bought the new drive to be able to store and back up into DVDs and CDs all the photographs and movies that are still in the computer. I also need to make CDs of my portfolio since I am trying to find a new job and buying a new Mac at this point is out of the question. To upgrade the computer: I just do not have use for OS 9 anymore; I cannot upgrade to the latest Java, Safari or have issues with Flash or other programs; the programs that I have and need will still run perfectly fine or better in Leopard. And even if I could buy another computer I would still like to hang onto this computer for a while.

  • Possible to uninstall leopard

    Hello,
    is it possible to uninstall leopard and use it on another computer?
    thnx
    dave

    "Uninstalling Leopard" is called "Re-installing Tiger."
    And yes, you can install it on another computer. The license agreement allows for install on one machine at a time.

  • Is it possible to uninstall LR trial version from a Mac?

    Is it possible to uninstall LR trial version from a Mac?

    Yes. Just drag the Lightroom program file to the trash.

  • Is it possible to uninstall IE 11 from Windows Server 2012 R2 and replace it with the latest version of IE 10?

    Is it possible to uninstall IE 11 from Windows Server 2012 R2 and replace it with the latest version of IE 10? We have a remote desktop farm setup with 2012 R2 servers and we are publishing some web links that only work with IE10. As a result, we need to
    downgrade the remote desktop servers to IE10. I have a feeling that this isn't possible, but if I could get a definitive answer, I would greatly appreciate it, thank you!

    Hi,
    Agreed with DonPick.
    Internet Explorer 11 is preinstalled with Windows 8.1 and Windows Server 2012 R2.
    More information regarding Internet Explorer 11, please check:
    Internet Explorer 11 - FAQ for IT Pros
    http://msdn.microsoft.com/en-us/library/dn268945.aspx
    Best regards
    Michael Shao
    TechNet Community Support

  • TS5458 How can I uninstall OS X Yosemite?

    I need to find out how to uninstall OS X Yosemite.  Please make it in simple english.  Fairly new at this.  When I upgraded I thought it was for what I already had not this new software.

    Restore the bootable backup/clone or Time Machine backup of your previously good OS. Alternatively, see http://osxdaily.com/2014/10/22/downgrade-os-x-yosemite-to-mavericks/, which mentions going back to Mavericks. It's not clear which OS you're running; although, you did post to the Mtn Lion forums.
    27" i7 iMac (Mid 2011) refurb, OS X Yo (10.10.1), Mavs, ML & SL, G4 450 MP w/10.5 & 9.2.2

  • Is it possible to uninstall...?

    One day ago, I downloaded the new OS X Lion - but I really don't like it... So I was wondering if it was possible to uninstall it and get an older software?
    Regards,
    Kasper

    http://www.itworld.com/software/198603/downgrade-mac-os-x-lion-snow-leopard

  • Is it possible to uninstall OSX?

    I recently had to install Leopard on an external hard drive so I could boot my Mac and fix a problem with my internal hard drive - mission accomplished.
    Now my problem is that I really don't want to keep OSX on the external drive - but there is other data on the external drive that I do want to keep and of course I have nowhere else to store this data at the moment. Thus reformatting the drive is not an option.
    So, is it possible to uninstall OSX from my external drive or is reformatting the drive the only way to get rid of OSX?

    You can dump the /System directory, but there are a bunch of invisible directories on the root that will still be taking up a good deal of space on your machine. /var, /usr, the mach files etc. are just a few. There is no OS uninstaller that I know of, Apple doesn't have anything built into their install disc other than options for wiping or reformatting a hard drive.

  • Is it possible to "uninstall" the Technical Preview?

    Simple as that, is it possible to uninstall the technical preview and go back to the previous setting?

    As per the FAQ
    Is there a problem you are needing help with?  
    http://windows.microsoft.com/en-us/windows/preview-faq#faq=tab0
    If you want to go back to your previous operating system
    You'll need to reinstall your version of Windows from the recovery or installation media that came with your PC (typically DVD media). If you don't have recovery media:
    For Windows 7 or Windows Vista: Before you update, you might be able to create recovery media from a recovery partition on your PC using software provided by your PC manufacturer. Check the support section of your PC manufacturer's
    website for more info.
    For Windows 8.1 or Windows 8: You might be able to create a USB recovery drive. For more info, seehttp://windows.microsoft.com/en-us/windows-8/create-usb-recovery-drive
    Thanks, John Marlin Microsoft Server Beta Team

  • Uninstall OS X Yosemite

    I need to uninstall OS X Yosemite, it has completely screwed up my internet and I am not longer able to use safari on my mac book.
    Does anyone know how to uninstall this update?
    I am desperate, I need my laptop for school and I need to be able to access the internet!

    Be careful.  You need to take some extra steps if you are going to revert to Mavericks.  After you install Yosemite, Time Machine data needs some tweaking before Mavericks will be able to recognize it properly and restore your data.  There were special instructions posted on the Beta site telling us how to safely remove Yosemite and re-install Mavericks, but that page has been modified in the past few days and that part was removed.  I asked that Apple re-post it someplace where we can find it again.  Wait for that.  It's a pain to wait, and might cost you, but you're taking your chances unless you follow those instructions.

  • TS1717 Is it possible to uninstall & reinstall iTunes and not have to redo all of my playlists etc.?

    Is it possible to uninstall & reinstall iTunes and not have to redo all of my playlists etc.?
    I updated iTunes and the installation failed and now I cannot open iTunes.  The fix is to unistall and reinstall iTunes but I don't want to have to redo all of my playlists and things.

    Do not worry all your Data including Playlist, etc. will remain as it is.
    Do the following:
    Uninstall from Windows the following five programs: iTunes, Apple Software Update, Apple Mobile Device Support, Bonjour and Apple Application Support. You do this from an applet in Control Panel called Programs & Features (in Windows 8, 7, or Vista) or Add or Remove Programs (in Windows XP).
    Download the latest version of iTunes from Apple and note the location you're saving it to so you can find it once it's done.
    Run the iTunes installation as an administrator, just Right click iTunes installer and Run as Administrator.
    Note : If you are unable to Remove Apple Mobile Device Support you can skip that.

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