Ik heb deze week El Capitan opnieuw geïnstalleerd. Ging probleemloos, tot ik ook de 10.11.1-update wilde installeren. Halverwege werd de installatie afgebroken en kreeg ik een kernel panic te zien. Die verdween na enkele tellen weer waarna de installatie opnieuw begon en halverwege wederom met een kernel panic eindigde. Hoe kan ik dit oplossen?

Je kunt de 10.11.2 combo update downloaden en proberen deze te installeren.
Download - OS X El Capitan 10.11.2 Combo-update

Combo update hielp niet, zelfde probleem. Zelfs opnieuw installeren via herstel lukt nu niet meer. De schijf is wel te zien, ik kan het password ingeven, maar daarna kan er niets op worden geinstalleerd. Ik krijg de foutmelding "filevault conversion in progress. Use the security & privacy  preference pane to check conversion status". Maar dat preference pane kan ik nergens zien. De inhoud van de schijf is nog wel te benaderen als ik van de interne disk opstart.

In Terminal staat nu over de bewuste SSD-schijf:

"conversion process: paused".

Gaat ongetwijfeld over filevault, dat ik onlangs had ingeschakeld. Enig idee hoe ik dit proces weer aan de gang krijg, nu ik de schijf zelf niet kan opstarten? Ik kan 'm evt. vanaf een andere schijf benaderen.

Probleem opgelost. In safe mode kon ik wel opstarten, filevault uitgezet, geen problemen meer.

Mooi gevonden! Proficiat.

En nu op naar 10.11.3?
Of heb ik dat net verkeerd gezien?

En ook van de iOS is een update beschikbaar. We kunnen weer een avondje vooruit ...

@ roel22: je hebt het nergens over een backup.

Ik neem aan dat als je die nog niet had, dat je die door deze ervaring nu wel hebt.    

Het probleem leek opgelost, maar is helaas weer terug. Ik had via de safe mode de iMac weer aan de praat gekregen, alles werkte als vanouds. Tot ik zojuist alsnog probeerde de 10.11.1-update te installeren: opnieuw een kernel panic. Meteen is het Apple usb-toetsenbord niet meer bruikbaar (een pc-toetsenbord wordt vreemd genoeg wel herkend).
Ik heb een backup, maar vind het nogal een ingreep om meteen maar de schijf te wissen en de backup terug te zetten (heb al eens ooit een corrupte backup gehad). Als er een andere oplossing is heeft dat nog even de voorkeur.

Haal eens alle perifere apparaten eraf (USB, FireWire, Thunderbolt) behalve bekabeld toetsenbord en muis. Zet ook Bluetooth even af. Probeer dan opnieuw.
Succes!

Alle apparaten eraf gaat lastig, aangezien mijn systeem op een externe disk staat. Ik heb EC op de interne disk gezet, maar daar weigert vervolgens elk programma op te starten.
Ik heb een etrecheck-rapport gemaakt, misschien valt daar iets uit af te leiden?

EtreCheck version: 2.7.6 (236)
Report generated 2016-01-21 23:18:38
Download EtreCheck from http://etrecheck.com
Runtime 2:17
Performance: Excellent

Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Check files] link for help with unknown files.

Problem: Other problem

Hardware Information: ⓘ
   iMac (27-inch, Late 2012)
   [Technical Specifications] - [User Guide] - [Warranty & Service]
   iMac - model: iMac13,2
   1 2,9 GHz Intel Core i5 CPU: 4-core
   16 GB RAM Upgradeable - [Instructions]
       BANK 0/DIMM0
           4 GB DDR3 1600 MHz ok
       BANK 1/DIMM0
           4 GB DDR3 1600 MHz ok
       BANK 0/DIMM1
           8 GB DDR3 1600 MHz ok
       BANK 1/DIMM1
           Empty  
   Bluetooth: Good - Handoff/Airdrop2 supported
   Wireless:  en1: 802.11 a/b/g/n

Video Information: ⓘ
   NVIDIA GeForce GTX 660M - VRAM: 512 MB
       iMac 2560 x 1440

System Software: ⓘ
   OS X El Capitan 10.11 (15A282a) - Time since boot: less than an hour

Disk Information: ⓘ
   APPLE HDD ST1000DM003 disk0 : (1 TB) (Rotational)
       EFI (disk0s1) <not mounted> : 210 MB
       Macintosh HD (disk0s2) /Volumes/Macintosh HD : 999.35 GB (40.86 GB free)
       Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB

USB Information: &#9432;
   Apple Inc. FaceTime HD Camera (Built-in)
   Apple Inc. BRCM20702 Hub
       Apple Inc. Bluetooth USB Host Controller
   MiniPro U32M
   Logitech USB Optical Mouse
   Chicony USB Keyboard

Thunderbolt Information: &#9432;
   Apple Inc. thunderbolt_bus

Gatekeeper: &#9432;
   Mac App Store and identified developers

Unknown Files: &#9432;
   /Library/LaunchDaemons/com.kpn.kpnBackupOnline.AutoUpdate.plist
   /Library/LaunchDaemons/com.kpn.BackupFP.plist
   2 unknown files found. [Check files]

Kernel Extensions: &#9432;
       /Applications/Apowersoft Mac Screen Recorder/Apowersoft Mac Screen Recorder.app
   [not loaded]    com.Cycling74.driver.Soundflower (1.0.0 - SDK 10.8) [Support]

       /Applications/Tunnelblick.app
   [not loaded]    net.tunnelblick.tap (1.0) [Support]
   [not loaded]    net.tunnelblick.tun (1.0) [Support]

       /Library/Application Support/VirtualBox
   [loaded]    org.virtualbox.kext.VBoxDrv (5.0.12) [Support]
   [loaded]    org.virtualbox.kext.VBoxNetAdp (5.0.12) [Support]
   [loaded]    org.virtualbox.kext.VBoxNetFlt (5.0.12) [Support]
   [loaded]    org.virtualbox.kext.VBoxUSB (5.0.12) [Support]

       /Library/Extensions
   [loaded]    com.Apowersoft.driver.AudioDevice (1.6.7 - SDK 10.11) [Support]

       /System/Library/Extensions
   [not loaded]    com.Belcarra.iokit.USBLAN_netpart (3.1.1 - SDK 10.6) [Support]
   [not loaded]    com.Belcarra.iokit.USBLAN_usbpart (3.1.1 - SDK 10.6) [Support]
   [not loaded]    com.RemoteControl.USBLAN.usbpart (3.1.1 - SDK 10.7) [Support]
   [not loaded]    com.dymo.usbprinterclassdriver.kext (1.1 - SDK 10.9) [Support]
   [loaded]    com.hzsystems.terminus.driver (4) [Support]
   [loaded]    com.logmein.driver.LogMeInSoundDriver (4.1.55f95) [Support]
   [loaded]    com.rim.driver.BlackBerryUSBDriverInt (0.0.74) [Support]
   [not loaded]    com.rim.driver.BlackBerryUSBDriverVSP (0.0.74) [Support]
   [not loaded]    com.roxio.BluRaySupport (1.1.6) [Support]
   [not loaded]    com.sony.filesystem.prodisc_fs (2.3.0) [Support]
   [not loaded]    com.sony.filesystems.pdudf (4.03.0d006 - SDK 10.6) [Support]
   [not loaded]    com.sony.filesystems.pdudfr (4.03.0d006 - SDK 10.6) [Support]
   [not loaded]    com.sony.pci.SxS (1.0) [Support]
   [not loaded]    com.sony.protocol.prodisc (2.3.0) [Support]
   [not loaded]    com.sony.scsi.PDW-U1 (4.03.0d006 - SDK 10.6) [Support]
   [not loaded]    com.tomtom.driver.UsbEthernetGadget (1.0.0d1) [Support]
   [not loaded]    com.wacom.kext.pentablet (5.3.0 - SDK 10.8) [Support]
   [not loaded]    org.dungeon.driver.SATSMARTDriver (0.8 - SDK 10.6) [Support]

       /System/Library/Extensions/2.2.0/Belcarra.USBLAN_netpart.kext/Contents/Plug-Ins
   [not loaded]    com.belcarra.iokit.netpart.panther (1.6.3) [Support]

       /System/Library/Extensions/2.2.0/Belcarra.USBLAN_usbpart.kext/Contents/Plug-Ins
   [not loaded]    com.belcarra.iokit.usbpart.panther (1.6.3) [Support]

       /System/Library/Extensions/2.2.0/RemoteControl.USBLAN_usbpart.kext/Contents/Plug-Ins
   [not loaded]    com.RemoteControl.USBLAN.panther (1.6.2) [Support]

       ~/Library/Services/ToastIt.service/Contents/MacOS
   [not loaded]    com.roxio.TDIXController (2.0) [Support]

Launch Agents: &#9432;
   [loaded]    com.adobe.AAM.Updater-1.0.plist [Support]
   [failed]    com.adobe.ARMDCHelper.cc24aef4a1b90ed56a...plist [Support]
   [running]    com.adobe.AdobeCreativeCloud.plist [Support]
   [loaded]    com.adobe.CS5ServiceManager.plist [Support]
   [loaded]    com.citrix.AuthManager_Mac.plist [Support]
   [running]    com.citrix.ReceiverHelper.plist [Support]
   [running]    com.citrix.ServiceRecords.plist [Support]
   [failed]    com.epson.Epson_Low_Ink_Reminder.launcher.plist [Support] [Details]
   [loaded]    com.epson.esua.launcher.plist [Support]
   [failed]    com.epson.eventmanager.agent.plist [Support] [Details]
   [loaded]    com.google.keystone.agent.plist [Support]
   [loaded]    com.intego.backupassistant.agent.plist [Support]
   [loaded]    com.logmein.logmeingui.plist [Support]
   [loaded]    com.logmein.logmeinguiagent.plist [Support]
   [loaded]    com.logmein.logmeinguiagentatlogin.plist [Support]
   [loaded]    com.maintain.LogOut.plist [Support]
   [loaded]    com.maintain.PurgeInactiveMemory.plist [Support]
   [loaded]    com.maintain.Restart.plist [Support]
   [loaded]    com.maintain.ShutDown.plist [Support]
   [loaded]    com.maintain.Sleep.plist [Support]
   [running]    com.maintain.SystemEvents.plist [Support]
   [loaded]    com.oracle.java.Java-Updater.plist [Support]
   [failed]    com.rim.BBAlbumArtCacher.plist [Support] [Details]
   [failed]    com.rim.BBLaunchAgent.plist [Support] [Details]
   [loaded]    com.teamviewer.teamviewer.plist [Support]
   [loaded]    com.teamviewer.teamviewer_desktop.plist [Support]
   [running]    com.wacom.pentablet.plist [Support]
   [running]    net.culater.SIMBL.Agent.plist [Support]
   [loaded]    org.macosforge.xquartz.startx.plist [Support]

Launch Daemons: &#9432;
   [loaded]    com.adobe.ARMDC.Communicator.plist [Support]
   [loaded]    com.adobe.ARMDC.SMJobBlessHelper.plist [Support]
   [loaded]    com.adobe.SwitchBoard.plist [Support]
   [loaded]    com.adobe.agsservice.plist [Support]
   [loaded]    com.adobe.fpsaud.plist [Support]
   [running]    com.cleverfiles.cfbackd.plist [Support]
   [loaded]    com.fxfactory.FxFactory.helper.plist [Support]
   [loaded]    com.google.keystone.daemon.plist [Support]
   [failed]    com.intego.BackupAssistant.daemon.plist [Support]
   [failed]    com.kpn.BackupFP.plist [Support]
   [loaded]    com.kpn.kpnBackupOnline.AutoUpdate.plist [Support]
   [loaded]    com.logmein.logmeinserver.plist [Support]
   [loaded]    com.logmein.raupdate.plist [Support]
   [loaded]    com.maintain.CocktailScheduler.plist [Support]
   [loaded]    com.maintain.HideSpotlightMenuBarIcon.plist [Support]
   [loaded]    com.malwarebytes.MBAMHelperTool.plist [Support]
   [loaded]    com.microsoft.autoupdate.helpertool.plist [Support]
   [loaded]    com.microsoft.office.licensingV2.helper.plist [Support]
   [loaded]    com.oracle.java.Helper-Tool.plist [Support]
   [loaded]    com.prosofteng.DriveGenius.locum.plist [Support]
   [failed]    com.rim.BBDaemon.plist [Support]
   [loaded]    com.teamviewer.Helper.plist [Support]
   [loaded]    com.teamviewer.teamviewer_service.plist [Support]
   [loaded]    net.tunnelblick.tunnelblick.tunnelblickd.plist [Support]
   [loaded]    org.cindori.TEAuth.plist [Support]
   [loaded]    org.macosforge.xquartz.privileged_startx.plist [Support]
   [loaded]    org.virtualbox.startup.plist [Support]

User Launch Agents: &#9432;
   [loaded]    com.adobe.AAM.Updater-1.0.plist [Support]
   [failed]    com.adobe.ARM.[...].plist [Support] [Details]
   [failed]    com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist [Details]
   [loaded]    com.bittorrent.uTorrent.plist [Support]
   [loaded]    com.citrixonline.GoToMeeting.G2MUpdate.plist [Support]
   [loaded]    com.digitalrebellion.PreferenceManagerAutoSave.plist [Support]
   [loaded]    com.facebook.videochat.[redacted].plist [Support]
   [loaded]    com.maintain.ShowUserLibraryDirectory.plist [Support]
   [running]    com.prosofteng.DGMonitor.plist [Support]
   [running]    com.spotify.webhelper.plist [Support]
   [failed]    com.valvesoftware.steamclean.plist [Support] [Details]
   [failed]    com.vladalexa.MagicPrefs.plist [Support] [Details]
   [loaded]    net.tunnelblick.tunnelblick.LaunchAtLogin.plist [Support]
   [loaded]    org.virtualbox.vboxwebsrv.plist [Support]

User Login Items: &#9432;
   Dropbox    Programma  (/Applications/Dropbox.app)

Other Apps: &#9432;
   [running]    com.adobe.acc.AdobeDesktopService.109152.C8C1E7AB-2CC2-4182-82CF-D2ADDD10160C
   [running]    com.adobe.accmac.117792
   [running]    com.apple.xpc.launchd.oneshot.0x10000009.EtreCheck
   [running]    com.dymo.pnpd
   [running]    com.getdropbox.dropbox.57632
   [running]    com.microsoft.OneDrive-mac.65952
   [loaded]    com.microsoft.OneDriveLauncher
   [running]    com.wacom.Consumer_TouchDriver.108512
   [running]    com.wacom.TabletDriver.108832
   [running]    org.mozilla.firefox.72992

Internet Plug-ins: &#9432;
   AdobeAAMDetect: Version: 3.0.0.0 - SDK 10.9 [Support]
   FlashPlayer-10.6: Version: 20.0.0.286 - SDK 10.6 [Support]
   QuickTime Plugin: Version: 7.7.3
   AdobePDFViewerNPAPI: Version: 15.010.20056 - SDK 10.8 [Support]
   AdobePDFViewer: Version: 15.010.20056 - SDK 10.8 [Support]
   Flash Player: Version: 20.0.0.286 - SDK 10.6 [Support]
   Default Browser: Version: 601 - SDK 10.11
   Google Earth Web Plug-in: Version: 7.1 [Support]
   Silverlight: Version: 5.1.40728.0 - SDK 10.6 [Support]
   JavaAppletPlugin: Version: Java 8 Update 66 build 17 Check version

User internet Plug-ins: &#9432;
   NPDjVu: Version: 6.1.1 [Support]
   DYMO NPAPI Addin: Version: 1.0 - SDK 10.9 [Support]
   Default Browser: Version: 600 - SDK 10.10
   Flip4Mac WMV Plugin: Version: 2.1.0.33 [Support]
   PrintDialogExt: Version: 6.1.1 [Support]
   DYMO Safari Addin: Version: Unknown - SDK 10.9 [Support]
   AdobeAAMDetect: Version: 3.0.0.0 - SDK 10.9 [Support]
   AdobePDFViewerNPAPI: Version: 15.007.20033 - SDK 10.8 [Support]
   Silverlight: Version: 5.1.30317.0 - SDK 10.6 [Support]
   Unity Web Player: Version: UnityPlayer version 3.5.6f4 - SDK 10.6 [Support]
   QuickTime Plugin: Version: 7.7.3
   iPhotoPhotocast: Version: 7.0 - SDK 10.8
   CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 [Support]
   SharePointBrowserPlugin: Version: 14.5.2 - SDK 10.6 [Support]
   AdobePDFViewer: Version: 15.007.20033 - SDK 10.8 [Support]
   WidevineMediaOptimizer: Version: Unknown [Support]
   JavaAppletPlugin: Version: Java 8 Update 66 build 17 Check version

Safari Extensions: &#9432;
   FastestTube
   iTube Studio

Audio Plug-ins: &#9432;
   EcammAudioLoader: Version: 1.0.3 - SDK 10.8 [Support]
   CallRecorder: Version: v2.5.11 - SDK 10.8 [Support]

3rd Party Preference Panes: &#9432;
   Citrix ShareFile Sync  [Support]
   Flash Player  [Support]
   Flip4Mac WMV  [Support]
   FUSE for OS X (OSXFUSE)  [Support]
   Java  [Support]
   MagicPrefs  [Support]
   Perian  [Support]
   XDCAM Drive Monitor  [Support]

Time Machine: &#9432;
   Skip System Files: NO
   Mobile backups: OFF
   Auto backup: YES
   Volumes being backed up:
   Destinations:
       Time Capsule van Roel Zuide [Network]
       Total size: 997.71 GB
       Total number of backups: 49
       Oldest backup: 13-09-15 00:22
       Last backup: 21-01-16 21:36
       Size of backup disk: Excellent
           Backup size 997.71 GB > (Disk size 0 B X 3)

Top Processes by CPU: &#9432;
        4%    kernel_task
        2%    WindowServer
        2%    mds_stores
        1%    fontd
        0%    diskimages-helper(3)

Top Processes by Memory: &#9432;
   1.10 GB    kernel_task
   541 MB    mdworker(11)
   442 MB    firefox
   295 MB    Dock
   246 MB    ocspd

Virtual Memory Information: &#9432;
   7.34 GB    Free RAM
   8.66 GB    Used RAM (2.23 GB Cached)
   0 B    Swap Used

Diagnostics Information: &#9432;
   Jan 21, 2016, 11:12:00 PM    Self test - passed
   Jan 21, 2016, 05:52:39 PM    /Library/Logs/DiagnosticReports/Dock_2016-01-21-175239_[redacted].cpu_resource.diag [Details]
       /System/Library/CoreServices/Dock.app/Contents/MacOS/Dock
   Jan 21, 2016, 05:48:35 PM    /Library/Logs/DiagnosticReports/Kernel_2016-01-21-174835_[redacted].panic [Details]
   Jan 21, 2016, 05:47:00 PM    /Library/Logs/DiagnosticReports/Kernel_2016-01-21-174700_[redacted].panic [Details]
   Jan 21, 2016, 05:46:32 PM    /Library/Logs/DiagnosticReports/Kernel_2016-01-21-174632_[redacted].panic [Details]
   Jan 21, 2016, 05:45:02 PM    /Library/Logs/DiagnosticReports/Kernel_2016-01-21-174502_[redacted].panic
   Jan 21, 2016, 05:41:34 PM    /Library/Logs/DiagnosticReports/Kernel_2016-01-21-174134_[redacted].panic [Details]
   Jan 21, 2016, 04:19:15 PM    ~/Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-21-161915_[redacted].crash
       com.apple.FinalCut - /Applications/Final Cut Pro.app/Contents/MacOS/Final Cut Pro
   Jan 21, 2016, 04:02:23 PM    ~/Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-21-160223_[redacted].crash
   Jan 21, 2016, 03:35:32 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-21-153532_[redacted].cpu_resource.diag [Details]
   Jan 21, 2016, 03:32:58 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-21-153258_[redacted].hang
   Jan 21, 2016, 03:32:27 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-21-153227_[redacted].cpu_resource.diag [Details]
   Jan 20, 2016, 06:34:34 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-183434_[redacted].hang
   Jan 20, 2016, 05:37:15 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-173715_[redacted].hang
   Jan 20, 2016, 05:25:24 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-172524_[redacted].hang
   Jan 20, 2016, 05:07:24 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-170724_[redacted].hang
   Jan 20, 2016, 04:54:41 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-165441_[redacted].hang
   Jan 20, 2016, 04:23:43 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-162343_[redacted].hang
   Jan 20, 2016, 04:21:34 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-162134_[redacted].hang
   Jan 20, 2016, 04:15:49 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-161549_[redacted].hang
   Jan 20, 2016, 12:19:03 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-121903_[redacted].hang
   Jan 20, 2016, 11:58:56 AM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-115856_[redacted].hang
   Jan 20, 2016, 11:24:50 AM    ~/Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-112450_[redacted].crash
   Jan 20, 2016, 11:06:24 AM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-20-110624_[redacted].hang
   Jan 19, 2016, 12:32:09 PM    /Library/Logs/DiagnosticReports/Final Cut Pro_2016-01-19-123209_[redacted].hang
   Jan 18, 2016, 09:31:43 AM    /Library/Logs/DiagnosticReports/Kernel_2016-01-18-093143_[redacted].panic [Details]
   Jan 18, 2016, 09:28:39 AM    /Library/Logs/DiagnosticReports/Kernel_2016-01-18-092839_[redacted].panic [Details]
   Jan 18, 2016, 09:27:11 AM    /Library/Logs/DiagnosticReports/Kernel_2016-01-18-092711_[redacted].panic [Details]

Misschien is SoundFlower niet meer compatibel met de nieuwste versies van OSX. Het is een Kernel Extensie dus deactiveer deze eens.

Rogue Amoeba zegt zelf over SoundFlower:

Unfortunately, we haven't had the time and resources to devote to improving the product.
...
Thankfully, at the end of 2015, Soundflower's original author Matt Ingalls picked up the baton. We expect he'll be providing some updates to Soundflower in the near future...

Meer: https://rogueamoeba.com/freebies/soundflower/

roel22 om 23:21, 21-01-2016
Alle apparaten eraf gaat lastig, aangezien mijn systeem op een externe disk staat.

Lijkt me dat dat nogal relevante info is, en in je OP hoorde.
Waarom extern?

Verder zie ik een paar utilities in bedrijf, zoals Cocktail en MagicPrefs. Dat hoeft aan zich geen probleem te zijn, maar nut hebben ze ook niet, en ze vergroten wel de risico's op corrupte software. Zeker als die progjes verwachten dat je OS intern staat.

Ik zou het wel weten: een schoon OS op een gewiste schijf en alleen relevante zaken ut de backup terug zetten.

Extern omdat ik vanaf SSD wil werken en inbouwen in mijn iMac geen eenvoudige klus is.