How can I uninstall OS X Yosemite and return to OS X Mavericks?

This update was incompatible with maybe 50% of my applications (VMWare Fusion, a number of java apps, email clients, word processing programs, ...).

It seems that Apple does not care about (or does not want) application compatibility?

Library versioning is a solved problem, so there is no good reason for this.

I installed Yosemite & found out several of my apps didn't work (Fusion, etc.) so I wen't back to the original OS (Mtn Lion). But the first thing I noticed is the horrible GUI - they wen't from the nicest, most beautiful & polished interface on any of our LiNUX, Microsoft, Android & Apple computers, and they took me back to totally flat (Windows 3.1 circa 1992???)

I booted the Macbook Air with the COMMAND-OPTION- R keys pressed & wen't thru the steps similar to whats described above (http://support.apple.com/kb/ht4718). I formatted my OS partition (NOT the whole hard drive), then let the installer download Mountain Lion from the internet & installed it locally. The whole process from Yosemite to Mountain Lion took about 5 hours (it's a few gigs down over home cable modem in Alaska).

The Microsoft upgrades let you CHOOSE to use the previous GUI style if you prefer it. I'd love the look/feel of Mavericks inside Yosemite. Can I download a theme/skin to accomplish that?

My new MacBook Pro 13' Retina get very slow since Yosemite...

Maverick was so fast and easy to use and now it is hard to me to work with it... my folders don't work and it feels like i had a MacBook from 2010, and this is not what i won't for this money i pay. 😟

I suggest you download and install EtreCheck from http://etresoft.com/etrecheck

Run EtreCheck and publish report here

Allan

I'm having major problems since the update. Late 2009 iMac . After install folders like >applications and >downloads never load, can't minimize windows, Doc is not showing at all. They just show a spinning wheel and empty contents. on the phone with apple support for 3 hours today and ended with a 48 hour call back. any ideas? Tried a fresh install of Yosemite twice, repaired disc permissions, check disc, restarted holding shift, created a new admin profile and still experiencing same issues...I'm lost.

EtreCheck version: 2.0.6 (91)

Report generated October 20, 2014 at 2:54:10 PM EDT

Hardware Information: ℹ️

iMac (27-inch, Late 2012) (Verified)

iMac - model: iMac13,2

1 3.2 GHz Intel Core i5 CPU: 4-core

8 GB RAM Upgradeable

BANK 0/DIMM0

4 GB DDR3 1600 MHz ok

BANK 1/DIMM0

4 GB DDR3 1600 MHz ok

BANK 0/DIMM1

empty empty empty empty

BANK 1/DIMM1

empty empty empty empty

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en1: 802.11 a/b/g/n

Video Information: ℹ️

NVIDIA GeForce GTX 675MX - VRAM: 1024 MB

iMac 2560 x 1440

System Software: ℹ️

OS X 10.10 (14A389) - Uptime: 0:2:27

Disk Information: ℹ️

APPLE HDD WDC WD10EALX-408EA0 disk0 : (1 TB)

S.M.A.R.T. Status: Verified

EFI (disk0s1) <not mounted> : 210 MB

Macintosh HD (disk0s2) / [Startup]: 999.35 GB (702.57 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

USB Information: ℹ️

Western Digital My Book 1140 3 TB

S.M.A.R.T. Status: Verified

disk1s1 (disk1s1) <not mounted> : 210 MB

My Book (disk1s2) /Volumes/My Book : 3 TB (59.90 GB free)

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Inc. FaceTime HD Camera (Built-in)

Thunderbolt Information: ℹ️

Apple Inc. thunderbolt_bus

Configuration files: ℹ️

/etc/hosts - Count: 20

Gatekeeper: ℹ️

Mac App Store and identified developers

Kernel Extensions: ℹ️

/Library/Extensions

[loaded] at.obdev.nke.LittleSnitch (4221 - SDK 10.8) Support

/Library/StartupItems/ArcanaStartupSound/Resources

[not loaded] arcana.PRAM (6.1) Support

/Users/[redacted]/Library/Services/ToastIt.service/Contents/MacOS

[not loaded] com.roxio.TDIXController (2.0) Support

Startup Items: ℹ️

ArcanaStartupSound: Path: /Library/StartupItems/ArcanaStartupSound

Startup items are obsolete and will not work in future versions of OS X

Launch Agents: ℹ️

[running] at.obdev.LittleSnitchUIAgent.plist Support

[not loaded] com.adobe.AAM.Updater-1.0.plist Support

[running] com.epson.ecrp.launcher.plist Support

[running] com.epson.Epson_Low_Ink_Reminder.launcher.plist Support

[loaded] com.epson.esua.launcher.plist Support

[running] com.epson.eventmanager.agent.plist Support

[loaded] com.oracle.java.Java-Updater.plist Support

Launch Daemons: ℹ️

[running] at.obdev.littlesnitchd.plist Support

[loaded] com.adobe.fpsaud.plist Support

[loaded] com.charlessoft.pacifist.helper.plist Support

[loaded] com.JavaW.plist Support

[loaded] com.microsoft.office.licensing.helper.plist Support

[loaded] com.oracle.java.Helper-Tool.plist Support

[loaded] com.oracle.java.JavaUpdateHelper.plist Support

[loaded] com.rogueamoeba.instanton-agent.plist Support

[running] com.syniumsoftware.CleanAppDaemon.plist Support

User Launch Agents: ℹ️

[loaded] com.adobe.AAM.Updater-1.0.plist Support

[loaded] com.adobe.ARM.[...].plist Support

[loaded] com.google.keystone.agent.plist Support

[running] com.spotify.webhelper.plist Support

[not loaded] info.lokiware.attachmenttamer.cleanup.plist Support

[invalid?] info.lokiware.attachmenttamer.setupagent.plist Support

[loaded] ltcm.plist Support

User Login Items: ℹ️

iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Internet Plug-ins: ℹ️

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

SharePointBrowserPlugin: Version: 14.4.4 - SDK 10.6 Support

Silverlight: Version: 5.1.30317.0 - SDK 10.6 Support

JavaAppletPlugin: Version: Java 7 Update 67 Check version

User Internet Plug-ins: ℹ️

CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 Support

Google Earth Web Plug-in: Version: 7.1 Support

Safari Extensions: ℹ️

YouTube5

Audio Plug-ins: ℹ️

DVCPROHDAudio: Version: 1.3.2

3rd Party Preference Panes: ℹ️

CleanApp Logging Service Support

Flash Player Support

Growl Support

Java Support

Perian Support

Time Machine: ℹ️

Auto backup: YES

Destinations:

My Book [Local]

Total size: 3 TB

Total number of backups: 97

Oldest backup: 2013-08-10 04:35:37 +0000

Last backup: 2014-10-20 16:43:36 +0000

Size of backup disk: Excellent

Backup size 3 TB > (Disk size 0 B X 3)

Top Processes by CPU: ℹ️

4% VLC

3% WindowServer

1% bluetoothaudiod

1% coreaudiod

0% fontd

Top Processes by Memory: ℹ️

144 MB mds_stores

120 MB Spotlight

112 MB com.apple.WebKit.WebContent

103 MB Finder

94 MB VLC

Virtual Memory Information: ℹ️

5.48 GB Free RAM

1.76 GB Active RAM

482 MB Inactive RAM

859 MB Wired RAM

1.05 GB Page-ins

0 B Page-outs

EtreCheck version: 2.0.6 (91)

Report generated October 20, 2014 at 2:03:42 PM CDT

Hardware Information: ℹ️

iMac (27-inch, Late 2009) (Verified)

iMac - model: iMac11,1

1 2.8 GHz Intel Core i7 CPU: 4-core

32 GB RAM Upgradeable

BANK 0/DIMM0

8 GB DDR3 1333 MHz ok

BANK 1/DIMM0

8 GB DDR3 1333 MHz ok

BANK 0/DIMM1

8 GB DDR3 1333 MHz ok

BANK 1/DIMM1

8 GB DDR3 1333 MHz ok

Bluetooth: Old - Handoff/Airdrop2 not supported

Wireless: en1: 802.11 a/b/g/n

Video Information: ℹ️

ATI Radeon HD 4850 - VRAM: 512 MB

iMac 2560 x 1440

System Software: ℹ️

OS X 10.10 (14A389) - Uptime: 1:14:29

Disk Information: ℹ️

WDC WD1001FALS-40U9B0 disk0 : (1 TB)

S.M.A.R.T. Status: Verified

EFI (disk0s1) <not mounted> : 210 MB

Macintosh HD (disk0s2) / [Startup]: 999.35 GB (101.94 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

OPTIARC DVD RW AD-5680H

USB Information: ℹ️

Generic Mass Storage 15.94 GB

S.M.A.R.T. Status: Verified

NO NAME (disk1s1) /Volumes/NO NAME : 15.94 GB (15.87 GB free)

Blue Microphones Yeti Stereo Microphone

Apple Inc. BRCM2046 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Internal Memory Card Reader

Apple Computer, Inc. IR Receiver

Apple Inc. Built-in iSight

Configuration files: ℹ️

/etc/hosts - Count: 14

Gatekeeper: ℹ️

Mac App Store and identified developers

Kernel Extensions: ℹ️

/Library/Application Support/Roxio

[not loaded] com.roxio.TDIXController (2.0) Support

/System/Library/Extensions

[loaded] com.LaCie.ScsiType00 (1.2.13 - SDK 10.5) Support

[not loaded] com.LaCie.driver.PXHCD (1.0.11 - SDK 10.6) Support

[not loaded] com.logmein.driver.LogMeInSoundDriver (1.0.0) Support

[not loaded] com.motorola-mobility.driver.MotMobileUSB (1.2.2 - SDK 10.5) Support

[not loaded] com.roxio.BluRaySupport (1.1.6) Support

[not loaded] com.seagate.driver.PowSecDriverCore (5.0.1) Support

[not loaded] com.wacom.kext.wacomtablet (6.3.9 - SDK 10.9) Support

[not loaded] com.wdc.driver.1394HP (1.0.9) Support

[not loaded] com.wdc.driver.USBHP (1.0.11) Support

/System/Library/Extensions/MotMobileUSB.kext/Contents/PlugIns

[not loaded] com.motorola-mobility.driver.MotMobileMS (1.0.0 - SDK 10.5) Support

[not loaded] com.motorola-mobility.driver.MotMobileMTP (1.2.2 - SDK 10.5) Support

[not loaded] com.motorola-mobility.driver.MotMobileUSBLAN (1.2.2 - SDK 10.5) Support

[not loaded] com.motorola-mobility.driver.MotMobileUSBLANMerge (1.2.2 - SDK 10.5) Support

[not loaded] com.motorola-mobility.driver.MotMobileUSBSwch (1.2.2 - SDK 10.5) Support

/System/Library/Extensions/Seagate Storage Driver.kext/Contents/PlugIns

[not loaded] com.seagate.driver.PowSecLeafDriver_10_4 (5.0.1) Support

[not loaded] com.seagate.driver.PowSecLeafDriver_10_5 (5.0.1) Support

[not loaded] com.seagate.driver.SeagateDriveIcons (5.0.1) Support

Startup Items: ℹ️

HP IO: Path: /Library/StartupItems/HP IO

Startup items are obsolete and will not work in future versions of OS X

Launch Agents: ℹ️

[not loaded] com.adobe.AAM.Updater-1.0.plist Support

[loaded] com.adobe.CS4ServiceManager.plist Support

[loaded] com.adobe.CS5ServiceManager.plist Support

[loaded] com.google.keystone.agent.plist Support

[running] com.logmein.logmeingui.plist Support

[not loaded] com.logmein.logmeinguiagent.plist Support

[not loaded] com.logmein.logmeinguiagentatlogin.plist Support

[loaded] com.motorola.MDMUpdater.plist Support

[running] com.motorola.motohelper.plist Support

[loaded] com.motorola.motohelperUpdater.plist Support

[running] com.seagate.SeagateStorageGauge.plist Support

[running] com.wacom.wacomtablet.plist Support

Launch Daemons: ℹ️

[loaded] com.adobe.fpsaud.plist Support

[invalid?] com.adobe.SwitchBoard.plist Support

[loaded] com.adobe.versioncueCS4.plist Support

[loaded] com.google.keystone.daemon.plist Support

[not loaded] com.gopro.stereomodestatus.plist Support

[not loaded] com.logmein.logmeinserver.plist Support

[invalid?] com.motorola-mobility.mmcfgd.plist Support

[loaded] com.oracle.java.JavaUpdateHelper.plist Support

User Launch Agents: ℹ️

[loaded] com.adobe.AAM.Updater-1.0.plist Support

[loaded] com.genieo.completer.download.plist Support

[loaded] com.genieo.completer.ltvbit.plist Support

[loaded] com.genieo.completer.update.plist Support

[running] com.spotify.webhelper.plist Support

User Login Items: ℹ️

SpeechSynthesisServer Application (/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks /SpeechSynthesis.framework/Versions/A/SpeechSynthesisServer.app)

Android File Transfer Agent Application (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)

TuneupMyMac UNKNOWN (missing value)

Google Chrome ApplicationHidden (/Applications/Google Chrome.app)

HPEventHandler UNKNOWN (missing value)

HP Scheduler Application (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)

WDQuickView Application (/Incompatible Software/WDQuickView.app)

Internet Plug-ins: ℹ️

o1dbrowserplugin: Version: 5.4.2.18903 Support

LogMeInSafari64: Version: 1.0.497 Support

Default Browser: Version: 600 - SDK 10.10

WacomTabletPlugin: Version: WacomTabletPlugin 2.1.0.6 - SDK 10.9 Support

AdobeAAMDetect: Version: AdobeAAMDetect 1.0.0.0 - SDK 10.6 Support

FlashPlayer-10.6: Version: 15.0.0.152 - SDK 10.6 Support

LogMeIn: Version: 1.0.497 Support

Silverlight: Version: 5.1.20913.0 - SDK 10.6 Support

Flash Player: Version: 15.0.0.152 - SDK 10.6 Mismatch! Adobe recommends 15.0.0.189

iPhotoPhotocast: Version: 7.0

LogMeInSafari32: Version: 1.0.497 Support

googletalkbrowserplugin: Version: 5.4.2.18903 Support

AdobePDFViewer: Version: 9.0.0 Support

QuickTime Plugin: Version: 7.7.3

JavaAppletPlugin: Version: Java 7 Update 65 Check version

User Internet Plug-ins: ℹ️

Google Earth Web Plug-in: Version: 7.1 Support

3rd Party Preference Panes: ℹ️

Adobe Version Cue CS4 Support

Flash Player Support

GoPro Support

Growl Support

Perian Support

WacomTablet Support

WDQuickView Support

Time Machine: ℹ️

Time Machine not configured!

Top Processes by CPU: ℹ️

100% Dock

99% lsregister

99% mds

78% Finder

2% Activity Monitor

Top Processes by Memory: ℹ️

515 MB Finder

241 MB firefox

206 MB Safari

172 MB Mail

137 MB com.apple.WebKit.WebContent

Virtual Memory Information: ℹ️

24.47 GB Free RAM

7.02 GB Active RAM

1.03 GB Inactive RAM

1.83 GB Wired RAM

1.52 GB Page-ins

0 B Page-outs

Uninstall Geneio;

http://www.thesafemac.com/tag/genieo/

See if that helps.

I uploaded the same question as I hate this new update. It was advised that you can return to Maverick if you backed up with TimeMachine but I stupidly did not back all my stuff up - at all - so am I still able to revert back to Maverick (I don't understand all the lingo either) but, will I lose literally everything if i do?

For help on downgrading, read How do I downgrade my Mac OS X operating system

I can't uninstall because the applications folder is not loading.

I have an iMac (27-inch, Mid 2011), 3.1 GHz Intel Core i5, 12 GB 1333 MHz DDR3, 1 TB SATA Disk

Yosemite has brought this machine to its knees. It is slower than the 2005 HP PC that I gave up for the iMac!

So, although it sounds like a bit of a faff, the best solution for me will be to backgrade the new Macbook Air to Mavericks

Unfortunately, Macs cannot boot from any OS older than what they came with. So, if yours comes with Yosemite preinstalled, that is what you will need to get used to. However, if there is still stock left over which has Mavericks installed, go for it - ask when you are buying it.

heres what I've done so far.

updated adobe flash player internet plug thing

removed aware using Adware Medic.

turned off Dashboard

nothings worked but just some things i read from various other sources.

readytorun wrote:

Launch Daemons: ℹ️

[loaded] com.JavaW.plist Support

You have a lot of issues here, the main being you appear to be infected with the iWorm Backdoor/Trojan/Botnet, almost certainly from installing pirated software from PirateBay or possibly another BitTorrent site. See Dr. Web announces new “iWorm” malware. It's not clear whether you must erase your hard drive or not. Removing the above file and the /Library/Application Support/JavaW/ folder will almost certainly disable the botnet, but depending on when you were infected, there may be additional files installed with unknown purposes.

Watch all your financial accounts and change all critical passwords, especially if you use the same one for many sites.