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.

Similar Messages

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.

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?

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

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.

How to uninstall Flash Player Yosemite 10.10.3?

How can I uninstall Flash Player in Yosemite 10.10.3?

Yes it is.
Choose the link that says:
Run the uninstaller on Mac OS X 10.4 and later (Tiger, Leopard, Snow Leopard, Mountain Lion, and Mavericks)

Uninstall java 6 Yosemite (Java for OS X 2014-001)

In order to run certain Apps and an Uninstaller from an older app under OS X 10.10, I was requested to install Java 6 (legacy), which I did successfully (Java for OS X 2014-001).
But now, that I do not need Java any more I would like to uninstall it. Any idea how to proceed? Would it be enough to just remove the plugin JavaAppletPlugin.plugin, from my System>Library>Java folder? Thanks.

I think this article should help http://www.itworld.com/article/2713083/enterprise-software/remove-java-1-6-or-1- 7-on-your-mac.html

I recently installed OS X Yosemite and now my tools in PSE12 won't work. I take HS football pics and really need these tools. Ready to uninstall!

It took two days to get the OS X Yosemite installed on my Mac Pro and now when I try to edit my football pics in PSE12 the tools freeze up and PSE12 has to be forced closed! I am ready to uninstall OS X Yosemite! Please help!

Never had a problem with my computer until today!
Problem description:
OS X Yosemite installed on my Mac Pro and now when I try to edit my football pics in PSE12 the tools freeze up and PSE12 has to be forced closed! I a
EtreCheck version: 2.0.11 (98)
Report generated November 6, 2014 at 7:15:18 PM CST
Hardware Information: ℹ️
MacBook Pro (13-inch, Mid 2012) (Verified)
MacBook Pro - model: MacBookPro9,2
1 2.5 GHz Intel Core i5 CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1600 MHz ok
BANK 1/DIMM0
2 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 4000 -
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10 (14A389) - Uptime: 8:49:25
Disk Information: ℹ️
APPLE HDD ST500LM012 disk0 : (500.11 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / [Startup]: 498.88 GB (172.21 GB free)
Encrypted AES-XTS Unlocked
Core Storage: disk0s2 499.25 GB Online
HL-DT-ST DVDRW GS31N
USB Information: ℹ️
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. FaceTime HD Camera (Built-in)
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Anywhere
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist Support
[failed] com.adobe.AdobeCreativeCloud.plist Support
[invalid?] com.canon.MFManager.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
User Launch Agents: ℹ️
[loaded] com.adobe.AAM.Updater-1.0.plist Support
[invalid?] com.zeobit.MacKeeper.Helper.plist Support
[invalid?] palmall-1-2.ver Support
[invalid?] palmall-1-2_updater.plist Support
[invalid?] palmall-1-2_updater.sh Support
User Login Items: ℹ️
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Dropbox UNKNOWN (missing value)
ElementsAutoAnalyzer Application (/Applications/Adobe Elements 12 Organizer.app/Contents/ElementsAutoAnalyzer.app)
Internet Plug-ins: ℹ️
AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 Support
FlashPlayer-10.6: Version: 15.0.0.189 - SDK 10.6 Support
QuickTime Plugin: Version: 7.7.3
Flash Player: Version: 15.0.0.189 - SDK 10.6 Support
Default Browser: Version: 600 - SDK 10.10
Silverlight: Version: 5.1.10411.0 - SDK 10.6 Support
JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
Safari Extensions: ℹ️
Facebook Cleaner
My eBay Manager
Add To Amazon Wish List
palmall-1
Pinterest
3rd Party Preference Panes: ℹ️
Flash Player Support
Time Machine: ℹ️
Time Machine not configured!
Top Processes by CPU: ℹ️
      5% WindowServer
      0% fontd
      0% AdobeCrashDaemon
      0% AddressBookSourceSync
      0% CEPHtmlEngine Helper
Top Processes by Memory: ℹ️
885 MB Adobe Photoshop Elements Editor
137 MB Finder
105 MB com.apple.WebKit.WebContent
69 MB Safari
39 MB WindowServer
Virtual Memory Information: ℹ️
41 MB Free RAM
1.19 GB Active RAM
1.16 GB Inactive RAM
725 MB Wired RAM
23.45 GB Page-ins
521 MB Page-outs
EtreCheck version: 2.0.11 (98)
Report generated November 6, 2014 at 7:37:10 PM CST
Hardware Information: ℹ️
MacBook Pro (13-inch, Mid 2012) (Verified)
MacBook Pro - model: MacBookPro9,2
1 2.5 GHz Intel Core i5 CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1600 MHz ok
BANK 1/DIMM0
2 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 4000 -
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10 (14A389) - Uptime: 9:11:15
Disk Information: ℹ️
APPLE HDD ST500LM012 disk0 : (500.11 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / [Startup]: 498.88 GB (172.23 GB free)
Encrypted AES-XTS Unlocked
Core Storage: disk0s2 499.25 GB Online
HL-DT-ST DVDRW GS31N
USB Information: ℹ️
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. FaceTime HD Camera (Built-in)
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Anywhere
Problem System Launch Agents: ℹ️
[failed] com.apple.AirPlayUIAgent.plist
[failed] com.apple.CallHistoryPluginHelper.plist
[failed] com.apple.CallHistorySyncHelper.plist
[failed] com.apple.cloudd.plist
[failed] com.apple.cmfsyncagent.plist
[failed] com.apple.coreservices.appleid.authentication.plist
[failed] com.apple.icloud.fmfd.plist
[failed] com.apple.nsurlsessiond.plist
[failed] com.apple.recentsd.plist
[failed] com.apple.sbd.plist
[failed] com.apple.scopedbookmarkagent.xpc.plist
[failed] com.apple.security.cloudkeychainproxy.plist
[failed] com.apple.telephonyutilities.callservicesd.plist
Problem System Launch Daemons: ℹ️
[failed] com.apple.AssetCacheLocatorService.plist
[failed] com.apple.awdd.plist
[failed] com.apple.ctkd.plist
[failed] com.apple.icloud.findmydeviced.plist
[failed] com.apple.ifdreader.plist
[failed] com.apple.nehelper.plist
[failed] com.apple.nsurlsessiond.plist
[failed] com.apple.periodic-daily.plist
[failed] com.apple.softwareupdate_download_service.plist
[failed] com.apple.systemstats.analysis.plist
[failed] com.apple.tccd.system.plist
[failed] com.apple.wdhelper.plist
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist Support
[failed] com.adobe.AdobeCreativeCloud.plist Support
[invalid?] com.canon.MFManager.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
User Launch Agents: ℹ️
[loaded] com.adobe.AAM.Updater-1.0.plist Support
[invalid?] com.zeobit.MacKeeper.Helper.plist Support
[invalid?] palmall-1-2.ver Support
[invalid?] palmall-1-2_updater.plist Support
[invalid?] palmall-1-2_updater.sh Support
User Login Items: ℹ️
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Dropbox UNKNOWN (missing value)
ElementsAutoAnalyzer Application (/Applications/Adobe Elements 12 Organizer.app/Contents/ElementsAutoAnalyzer.app)
Internet Plug-ins: ℹ️
AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 Support
FlashPlayer-10.6: Version: 15.0.0.189 - SDK 10.6 Support
QuickTime Plugin: Version: 7.7.3
Flash Player: Version: 15.0.0.189 - SDK 10.6 Support
Default Browser: Version: 600 - SDK 10.10
Silverlight: Version: 5.1.10411.0 - SDK 10.6 Support
JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
Safari Extensions: ℹ️
Facebook Cleaner
My eBay Manager
Add To Amazon Wish List
palmall-1
Pinterest
3rd Party Preference Panes: ℹ️
Flash Player Support
Time Machine: ℹ️
Time Machine not configured!
Top Processes by CPU: ℹ️
      6% WindowServer
      0% iconservicesd
      0% AddressBookSourceSync
      0% AppleSpell
      0% fontd
Top Processes by Memory: ℹ️
524 MB Adobe Photoshop Elements Editor
236 MB Finder
180 MB com.apple.WebKit.WebContent
99 MB Safari
52 MB mds_stores
Virtual Memory Information: ℹ️
64 MB Free RAM
1.18 GB Active RAM
1.14 GB Inactive RAM
734 MB Wired RAM
24.02 GB Page-ins
525 MB Page-outs

How to uninstall OS X Yosimate an them install OS X Maverick

How to uninstall OS X Yosemite an them install OS X Maverick

http://osxdaily.com/2014/10/22/downgrade-os-x-yosemite-to-mavericks/
27" i7 iMac (Mid 2011) refurb, OS X Yo (10.10.1), Mavs, ML & SL, G4 450 MP w/10.5 & 9.2.2

Some of my programs are not working on Yosemite, how can I get mavericks back?

Hello,
I have upgraded to Yosemite, however some of my programs will not work. Is there any way that I can go back to the older Mac Os x?
-J

I would suggest you to post the query on Apple forums.
You may also refer
How can I uninstall OS X Yosemite and return to... | Apple Support Communities
Is there any error message while you are trying to use Adobe products?

Can't uninstall plug

I Can't find mig plugin on safari to uninstall it on Yosemite.What does mig plugin 10.0 do anyway help would be much appreciated thank you.

Back up all data before making any changes. Please take each of the following steps until the problem is resolved.
Step 1
Triple-click anywhere in the line of text below on this page to select it, the copy the selected text to the Clipboard by pressing the key combination command-C:
/Library/Internet Plug-ins
In the Finder, select
Go ▹ Go to Folder
from the menu bar, or press the key combination shift-command-G. Paste into the text box that opens by pressing command-V, then press return.
From the folder that opens, move to the Trash any items that you don't want. You may be prompted for your login password. Then quit and relaunch Safari.
Step 2
Do as in Step 1 with this line:
~/Library/Internet Plug-ins
If you don’t like the results of this procedure, restore the items from the backup you made before you started. Relaunch Safari.

How can I remove the OS X Yosemite and reinstall the original Snow Leopard?

I recently installed OS X Yosemite and it is very slow and most of all it will not allow me to use Word and Most of my work is done on WORD. Can any one help? Can some one lead me on how to uninstall OS X Yosemite and reinstating the original Snow Leopard?

If you made a Time Machine backup or bootable clone of Snow Leopard, restore it onto a blank partition or drive. If not, insert a Mac OS X install DVD, restart with the C or Option key held down, and install it onto a blank partition or drive.
To erase or repartition the internal drive, use the Disk Utility, which is accessible from the Utilities folder(choose it from the Finder's Go menu) or when booted to the DVD or recovery partition.
(126426)

Yosemite & McAfee Internet Security Conflict

Greetings all!
My Yosemite update has not been properly functioning - 'til now.
I just spent an hour on the phone with Apple Support, going through various iterations to fix the problem of why Yosemite would not boot up. It turns out that AT&T had suggested that I install McAfee Internet Security and that was the source of a/the problem. After I uninstalled it, then Yosemite booted up fine.
Ergo, if you're having a problem getting into Yosemite, try booting into Safe Mode, and then when in, uninstall McAfee Internet Security and see what happens.
My $0.02 worth and YMMV...
Tim!

FYI:
https://kc.mcafee.com/corporate/index?page=content&id=KB68147
And,
https://community.mcafee.com/thread/72321?start=0&tstart=0

Preview app not working since Yosemite update

Preview will not open jpeg or any other document. I get an error message stating "an unexpected error" has occurred. I tried repairing disk permissions and worked with a Genius tech on the chat feature but nothing worked. It was recommended to uninstall and reinstall Yosemite but it failed to work. Since then, I am worried about trying again as the first update reset passwords and accessibility to pro apps such as Photoshop and Lightroom, data was lost somehow and install subscriptions were

Do a backup.
Quit Preview.
Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Remove the following. You may not find them all.
Containers/com.apple.Preview
Preferences/com.apple.Preview.LSSharedFileList.plist
Preferences/com.apple.Preview.SandboxedPersistentURLs.LSSharedFileList.plist
Saved Application State/com.apple.Preview.savedState
Credit Linc Davis for this solution.

Mail crashes when displaying messages if GPGMail active.

Mail crashed regularly when displaying the message content.
I had to uninstall GPGTools (with GPGMail), then all was OK. I hope this can help!

I just found a warning on the GPG Suite website (https://gpgtools.org/news) stating that the Yosemite upgrade of GPGMail will be paid only. There is a beta versione available for those who needs encryption. They also advice to uninstall GPGMail after Yosemite install.

Uninstall OS X Yosemite

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