Boot up after installing El Capitan

I just had what sounds like this exact problem when installing the 10.11 public GM over my 10.10.5 install on my iMac14,2.

I started the install and when I came back later, it was at a black screen with the white Apple logo, a progress bar 85-ish%, with no other text on screen. (eg, no "About x minutes remaining" or anything like that.) I think this may have simply been the boot process after the installation finished and the machine restarted itself. I am not sure since I wasn't nearby when it happened.

At any rate, the progress bar was stuck in the same spot, and the spinning-pinwheel-of-doom was spinning for over an hour (since I noticed it was at this point) with no progress. Restarting the machine it returned to exactly the same state, even while holding shift to get it into safe boot mode.

Next I restarted holding Cmd-R during reboot to get into recovery mode. The black screen, white Apple logo and progress bar showed up again, and the progress bar moved along to around 85% again and I thought I was screwed. About 10 seconds later the screen flickered... flickered again.... flickered really weirdly again.... and then BING! Up pops recovery mode — the 10.11 version.

I opened Terminal, verified that all of my files were there, and then I started looking for third party kernel extensions. I hade 3.

- TelestreamAudio.kext

- VaraAudio.kext (the older version of TelestreamAudio.kext)

- PromisePegasusJ4.kext

Why the installer or boot process didn't move these out of the system extensions folder to disable them, I have no idea. But I deleted them, and then started First Aid on the disk as well, which found and fixed no problems. Restarted the machine and all was good.

So, for me:

- Boot into recovery mode by holding Cmd-R

- Verify you're in the El Cap recovery mode (the font will be different, and looking in About you'll see the new El Cap icon)

- Open Terminal

- ls /Volumes/Macintosh\ HD/System/Library/Extensions

- Find and delete the third party ones (be very sure you know what you are doing)

- Do a First Aid on the HD just to be sure

- Restart

- Pray

Good night, and good luck.

The tip about the Eltima Syncmate seems to have done it for me as well. Thanks. I had read about removing the Virtual Box (kexts or plists; not sure which) and had tried that but it did not get me going. I just tried removing the Eltimate Syncmate stuff (I do not even use that software anymore so it was just left over stuff) and i was just able to do a successful reboot of El Capitan. Still more playing around to do but hopefully I am on my way finally.

Thanks.

A.

hi,

may i know how did you remove the culprits?

thanks

Hi,

May I know the command in deleting the files you mentioned?

thanks

Use the 'rm' command. https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/ man1/rm.1.html

When removing a kext, since it is a folder, you'll want to use the -r argument, so something like

rm -r /Volumes/Macintosh\ HD/System/Library/Extensions/ThirdParty.kext

You can easily delete things unintenionally if you are not careful with this command, particularly the escaping of spaces in the volume name.

Deleting a third party kext itself is safe, but deleting anything else is bad news. Make sure you really understand what you are deleting, why, and how.

I used an app called Etrecheck to show me what kexts were loading. I then looked for ones that looked out of place, i.e. for software I was no longer using. For me it was Virtualbox and Eltima Syncmate. I then removed the kext files which are typically loaded in the Library/Application Support or the System/Library folders. Once you have located them I suggest copying any that you plan to remove in case you remove one that you actually need to put back and then once you have them copied somewhere else then go ahead and delete them before you reboot (after you have done the upgrade to El Capitan). If you come back up OK, then you should be fine (I am still messing around with it; I've done multiple reboots now and all seems well so far).

Hope that helps. Good luck.

A.

I have this same issue on an iMac so not sure how and what I can do as I only have the power button?

Hello. Same proble. I've got these extensions. Which ones should I delete and how exactle, please ?

Last login: Sun Oct 4 15:43:01 on ttys000

iMacBruno:~ brunow$ ls /Volumes/Macintosh\ HD/System/Library/Extensions

ALF.kext

AMD2400Controller.kext

AMD2600Controller.kext

AMD3800Controller.kext

AMD4600Controller.kext

AMD4800Controller.kext

AMD5000Controller.kext

AMD6000Controller.kext

AMD7000Controller.kext

AMD8000Controller.kext

AMD9000Controller.kext

AMDFramebuffer.kext

AMDMTLBronzeDriver.bundle

AMDRadeonVADriver.bundle

AMDRadeonX3000.kext

AMDRadeonX3000GLDriver.bundle

AMDRadeonX4000.kext

AMDRadeonX4000GLDriver.bundle

AMDShared.bundle

AMDSupport.kext

ATIRadeonX2000.kext

ATIRadeonX2000GA.plugin

ATIRadeonX2000GLDriver.bundle

ATIRadeonX2000VADriver.bundle

Apple16X50Serial.kext

AppleACPIPlatform.kext

AppleAHCIPort.kext

AppleAPIC.kext

AppleBMC.kext

AppleBacklight.kext

AppleBacklightExpert.kext

AppleBluetoothMultitouch.kext

AppleBluetoothRemote.kext

AppleCameraInterface.kext

AppleCredentialManager.kext

AppleEFIRuntime.kext

AppleFDEKeyStore.kext

AppleFIVRDriver.kext

AppleFSCompressionTypeDataless.kext

AppleFSCompressionTypeZlib.kext

AppleFWAudio.kext

AppleFileSystemDriver.kext

AppleGraphicsControl.kext

AppleGraphicsPowerManagement.kext

AppleHDA.kext

AppleHIDKeyboard.kext

AppleHIDMouse.kext

AppleHIDTransport.kext

AppleHPET.kext

AppleHPM.kext

AppleHSSPIHIDDriver.kext

AppleHSSPISupport.kext

AppleHV.kext

AppleHWSensor.kext

AppleIRController.kext

AppleInputDeviceSupport.kext

AppleIntelBDWGraphics.kext

AppleIntelBDWGraphicsFramebuffer.kext

AppleIntelBDWGraphicsGLDriver.bundle

AppleIntelBDWGraphicsMTLDriver.bundle

AppleIntelBDWGraphicsVADriver.bundle

AppleIntelBDWGraphicsVAME.bundle

AppleIntelCPUPowerManagement.kext

AppleIntelCPUPowerManagementClient.kext

AppleIntelFramebufferAzul.kext

AppleIntelFramebufferCapri.kext

AppleIntelGraphicsShared.bundle

AppleIntelHD3000Graphics.kext

AppleIntelHD3000GraphicsGA.plugin

AppleIntelHD3000GraphicsGLDriver.bundle

AppleIntelHD3000GraphicsVADriver.bundle

AppleIntelHD4000Graphics.kext

AppleIntelHD4000GraphicsGLDriver.bundle

AppleIntelHD4000GraphicsMTLDriver.bundle

AppleIntelHD4000GraphicsVADriver.bundle

AppleIntelHD5000Graphics.kext

AppleIntelHD5000GraphicsGLDriver.bundle

AppleIntelHD5000GraphicsMTLDriver.bundle

AppleIntelHD5000GraphicsVADriver.bundle

AppleIntelHDGraphics.kext

AppleIntelHDGraphicsFB.kext

AppleIntelHDGraphicsGA.plugin

AppleIntelHDGraphicsGLDriver.bundle

AppleIntelHDGraphicsVADriver.bundle

AppleIntelHSWVA.bundle

AppleIntelIVBVA.bundle

AppleIntelLpssDmac.kext

AppleIntelLpssGspi.kext

AppleIntelLpssI2C.kext

AppleIntelLpssI2CController.kext

AppleIntelLpssSpiController.kext

AppleIntelLpssUART.kext

AppleIntelMCEReporter.kext

AppleIntelPCHPMC.kext

AppleIntelSNBGraphicsFB.kext

AppleIntelSNBVA.bundle

AppleIntelSlowAdaptiveClocking.kext

AppleKextExcludeList.kext

AppleKeyStore.kext

AppleKeyswitch.kext

AppleLPC.kext

AppleLSIFusionMPT.kext

AppleMCCSControl.kext

AppleMCP89RootPortPM.kext

AppleMIDIBluetoothDriver.plugin

AppleMIDIFWDriver.plugin

AppleMIDIIACDriver.plugin

AppleMIDIRTPDriver.plugin

AppleMIDIUSBDriver.plugin

AppleMatch.kext

AppleMikeyHIDDriver.kext

AppleMobileDevice.kext

AppleMobileFileIntegrity.kext

AppleMultitouchDriver.kext

AppleOSXUSBNCM.kext

AppleOSXWatchdog.kext

ApplePlatformEnabler.kext

AppleRAID.kext

AppleRAIDCard.kext

AppleRTC.kext

AppleSDXC.kext

AppleSEP.kext

AppleSMBIOS.kext

AppleSMBusController.kext

AppleSMBusPCI.kext

AppleSMC.kext

AppleSMCLMU.kext

AppleSRP.kext

AppleSmartBatteryManager.kext

AppleStorageDrivers.kext

AppleThunderboltDPAdapters.kext

AppleThunderboltEDMService.kext

AppleThunderboltIP.kext

AppleThunderboltNHI.kext

AppleThunderboltPCIAdapters.kext

AppleThunderboltUTDM.kext

AppleTopCase.kext

AppleTyMCEDriver.kext

AppleUSBACM.kext

AppleUSBAudio.kext

AppleUSBCDC.kext

AppleUSBDMM.kext

AppleUSBDisplays.kext

AppleUSBECM.kext

AppleUSBEEM.kext

AppleUSBEthernet.kext

AppleUSBEthernetHost.kext

AppleUSBFTDI.kext

AppleUSBMultitouch.kext

AppleUSBNCM.kext

AppleUSBNetworking.kext

AppleUSBTopCase.kext

AppleUSBWCM.kext

AppleUpstreamUserClient.kext

AppleVADriver.bundle

AppleWWANAutoEject.kext

AppleXsanScheme.kext

Apple_iSight.kext

AudioAUUC.kext

BootCache.kext

CellPhoneHelper.kext

CoreCaptureResponder.kext

CoreStorage.kext

DSACL.ppp

DSAuth.ppp

DVFamily.bundle

Dont Steal Mac OS X.kext

EAP-KRB.ppp

EAP-RSA.ppp

EAP-TLS.ppp

EPSONUSBPrintClass.kext

ElmediaPlayer.kext

EltimaAsync.kext

GeForce.kext

GeForceAIRPlugin.bundle

GeForceGA.plugin

GeForceGLDriver.bundle

GeForceMTLDriver.bundle

GeForceTesla.kext

GeForceTeslaGLDriver.bundle

GeForceTeslaVADriver.bundle

GeForceVADriver.bundle

IO80211Family.kext

IOACPIFamily.kext

IOAHCIFamily.kext

IOATAFamily.kext

IOAVBFamily.kext

IOAccelerator2D.plugin

IOAcceleratorFamily.kext

IOAcceleratorFamily2.kext

IOAudioFamily.kext

IOBDStorageFamily.kext

IOBluetoothFamily.kext

IOBluetoothHIDDriver.kext

IOCDStorageFamily.kext

IODVDStorageFamily.kext

IOFireWireAVC.kext

IOFireWireFamily.kext

IOFireWireIP.kext

IOFireWireSBP2.kext

IOFireWireSerialBusProtocolTransport.kext

IOGraphicsFamily.kext

IOHDIXController.kext

IOHIDFamily.kext

IONDRVSupport.kext

IONVMeFamily.kext

IONetworkingFamily.kext

IOPCIFamily.kext

IOPlatformPluginFamily.kext

IOReportFamily.kext

IOSCSIArchitectureModelFamily.kext

IOSCSIParallelFamily.kext

IOSMBusFamily.kext

IOSerialFamily.kext

IOSlowAdaptiveClockingFamily.kext

IOStorageFamily.kext

IOStreamFamily.kext

IOSurface.kext

IOThunderboltFamily.kext

IOTimeSyncFamily.kext

IOUSBAttachedSCSI.kext

IOUSBFamily.kext

IOUSBHostFamily.kext

IOUSBMassStorageClass.kext

IOUSBMassStorageDriver.kext

IOUserEthernet.kext

IOVideoFamily.kext

JMicronATA.kext

L2TP.ppp

Libm.kext

NVDAGF100Hal.kext

NVDAGK100Hal.kext

NVDANV50HalTesla.kext

NVDAResman.kext

NVDAResmanTesla.kext

NVDAStartup.kext

NVMeSMARTLib.plugin

NVSMU.kext

OSvKernDSPLib.kext

PPP.kext

PPPSerial.ppp

PPPoE.ppp

PPTP.ppp

Quarantine.kext

Radius.ppp

SMARTLib.plugin

SMCMotionSensor.kext

Sandbox.kext

System.kext

TMSafetyNet.kext

acfs.kext

acfsctl.kext

autofs.kext

cd9660.kext

cddafs.kext

corecapture.kext

corecrypto.kext

exfat.kext

hp_fax_io.kext

iPodDriver.kext

mcxalr.kext

msdosfs.kext

ntfs.kext

pmtelemetry.kext

pthread.kext

smbfs.kext

triggers.kext

udf.kext

vecLib.kext

webcontentfilter.kext

webdav_fs.kext

Hi and hope you can assist me (new to the forum),

Reading your notes it seems I may have the same problem for not having "El Capitan" booting up. Used EtreCheck and at least one the problems might be same as yours. "

/System/Library/Extensions

[loaded] com.eltima.SyncMate.kext (0.2.5b15) [Click for support]"

Could you please inform how to remove the error by using the "terminal function" so I can hopefully resolve the problem?

Thanks in advance.

Best regards, Federico

ElmediaPlayer.kext and EltimaAsync.kext are both obviously not Apple extensions. Probably EPSONUSBPrintClass.kext, but you'd need to look at the contents of EPSONUSBPrintClass.kext/Contents/Info.plist to be sure. (If the CFBundleIdentifier starts with com.apple, then you know it's Apple's.)

Try this:

kextfind /Volumes/your-volume-name/System/Library/Extensions \( -nonloadable \) -print -pp CFBundleIdentifier -print-diagnostics

That should complain about any unsigned kexts which should be the problem. But still, don't delete any Apple-supplied kexts. Only ones you can be sure are third-party. And in fact, instead of deleting them outright, it'd be smart to move them aside somewhere (like in a folder on your user Desktop).

I had this issue and removing Virtual Box extensions solved it.. I think there were 3-4 of them starting with VBOX, however I am sure the others that are experiencing this issue may never have installed Virtual Box, and potentially some other extension is now causing the issue. These were located that \startup_disk\Library\Extensions

John, I follow your instructions and didn't work. It stays on the user select screen but don't let me choose any user. Any idea?

Unfortunately I installed El Capitan on Oct 1st and now the OS opens with a Circle/Slash logo. I have to open in recovery mode and it takes 40 minutes.

This is an epic bad upgrade.

hi,

this solved the boot up issue after EC install.

Posted by TSOPA from Reboot fail after installing El Capitan help!!

Hey I ran across this fix and it worked for me on two machines.

Email this code to yourself, but change the machine name to YOUR EXACT machine name.

• cd "/Volumes/MacMini HD/Library/Extensions/" ; mkdir Unsupported ; mv Net* Unsupported ; mv Sym* Unsupported ; mv hp* Unsupported ; mv ndc* Unsupported ; cd "/Volumes/MacMini HD/System/Library/Extensions/" ; mkdir Unsupported ; mv Belc* Unsupported ; mv Eltima* Unsupported ; mv hp* Unsupported ; mv Hua* Unsupported ; mv Netg* Unsupported ; mv Remo* Unsupported ; mv RIM* Unsupported ; mv USBEx* Unsupported ; rm -Rf /Volumes/MacMini\ HD/Library/Filesystems/*fuse* ; rm -Rf /Volumes/MacMini\ HD/Library/Application\ Support/Sym* ; rm -Rf /Volumes/MacMini\ HD/var/folders/*

Boot in Restore mode.

Click OS help and Safari will open

Open your email and copy the code

Quit Safari and open Terminal from the top menu

Paste the code and hit return.

Give it a minute or two. When it is done you will then be able to quit Terminal.

Restart

I've followed this thread with interest. This (very frustrating) problem happened to me after updating to El Capitan. After 45 minutes at the Genius Bar (he confirmed that the hard drive was fine, but that there was a problem with the install of El Capitan), he reinstalled Yosemite, told me to go home and update to El Capitan and then load my files back in from Time Machine, Did so, same problem occurred: my iMac won't reboot after install. So now I've figured out how to go back to Yosemite, and will not even attempt to update to El Capitan until I am certain that these issues have been resolved. As far as I am concerned, this is a flawed release (El Capitan) and there's no way I'm going to go hunt and peck through my library to figure out what's causing the conflict. Just very frustrating and unfortunate. But I'll be watching this thread to see if/when Apple figures out this mess.And I really hope that someone at Apple is reading these threads too. Guys, you're wasting the time of the folks at the Genius Bar, and you're getting your loyal customers very ****** off.