Ralph I believe it is time you did a nuke of the hard drive and a clean install of OS X.12 and then update using the combo updater to OS X.12.6.
When you downloaded El Capitan, did you by chance use DiskmakerX or similar and make a bootable USB thumb drive? You could use it again now to save download OS X.12 all over again. I use this process on each and every operating system upgrade. Why? Because that is the way we used to do it and it always has worked having a nice clean,. new operatin g system on a nice clean hard drive.
As a matter of fact, I do have a thumb drive with ElCaptan 10.11.3 on it. What I'm afraid of is going back to that and then having continuing problems upgrading from there as I am having now. What do you think are the chances of that happening?
Let me tell you where I'm at from efforts the past day. I did some searching and ran across EtreCheck software. I ran it, got rid of most of items marked in red and retried installing 10.12.6.
I found a file called iAntivirus under /system/library/extensions, thinking that may be part of the problem. I looked it up and found that it was part of some Norton software, although I don't remember ever running Norton on the iMac. I tried to find the file on the Mac and could not. Is it possible it is a "hidden" file"? If so, any idea how I can get rid of it? I thought that maybe if I installed the software and immediately uninstalled it, it would disappear. But, when I found a download link online, it said it is no longer available in the U.S. So, that idea didn't go anywhere!
After cleaning things up the best I could, I again tried to install 10.12.6 Combo, both in my user account as well as in my wife's, and in normal and in safe mode and again running First Aid beforehand. Every time, it went straight from clicking okay to restart right into restarting. No installation time what-so-ever.
I just ran into another issue. I thought it would be good to do a Time Machine backup and after waiting for it for what seemed like ages, it just stopped writing with about 3 minutes to go. I restarted it and it said there was 847 MB left to write. It, too, stopped after writing about 250MB. Tried it another three times and it reported 870MB, 872MB and then 874MB left to write and each time it stopped short after writing about 250MB. I would have thought the amount remaining would have decreased by what was written each time but, it actually kept increasing a bit each time. This seems to be a similar behavior as trying to install 10.12.6.
Here is the latest Etrecheck report. Is there any way to get red of the remaining two red "
Fail" items? Are they of any significance?
EtreCheck version: 3.4.6 (460)
Report generated 2018-02-01 17:26:39
Download EtreCheck from
https://etrecheck.com
Runtime: 3:39
Performance: Good
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Problem: Other problem
Hardware Information: ⓘ
iMac (21.5-inch, Mid 2010)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac11,2
1 3.6 GHz Intel Core i5 (i5) CPU: 2-core
8 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
BANK 0/DIMM1
2 GB DDR3 1333 MHz ok
BANK 1/DIMM1
2 GB DDR3 1333 MHz ok
Handoff/Airdrop2: not supported
Wireless: en1: 802.11 a/b/g/n
iCloud Quota: 3.80 GB available
Video Information: ⓘ
ATI Radeon HD 5670 - VRAM: 512 MB
iMac 1920 x 1080
Disk Information: ⓘ
WDC WD1001FALS-40Y6A0 disk0: (1 TB) (Rotational)
[Show SMART report]
(disk0s1) <not mounted> [EFI]: 210 MB
[redacted] (disk0s2 - Journaled HFS+) / [Startup]: 999.35 GB (832.68 GB free)
(disk0s3) <not mounted> [Recovery]: 650 MB
HL-DT-STDVDRW GA32N ()
USB Information: ⓘ
USB20Bus
hub_device
Apple Computer, Inc. IR Receiver
Apple Inc. Built-in iSight
USB20Bus
hub_device
Apple, Inc. Keyboard Hub
Apple, Inc Apple Keyboard
Kensington Kensington Expert Mouse
Apple Card Reader
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Firewire Information: ⓘ
LaCie d2 quadra (button) 800mbit - 800mbit max
(disk1s1) <not mounted> [EFI]: 210 MB
LaCie (disk1s2 - Journaled HFS+) /Volumes/LaCie : 999.86 GB (644.03 GB free)
System Software: ⓘ
macOS Sierra 10.12.1 (16B2657) - Time since boot: about 3 hours
Gatekeeper: ⓘ
Mac App Store and identified developers
Kernel Extensions: ⓘ
/Library/Extensions
[loaded] com.kensington.trackballworks.driver (1.3.0 - SDK 10.8) [Lookup]
/System/Library/Extensions
[not loaded] com.Belcarra.iokit.USBLAN_netpart (3.1.1 - SDK 10.6) [Lookup]
[not loaded] com.Belcarra.iokit.USBLAN_usbpart (3.1.1 - SDK 10.6) [Lookup]
[not loaded] com.Cycling74.driver.Soundflower (1.6.5 - SDK 10.6) [Lookup]
[not loaded] com.RemoteControl.USBLAN.usbpart (3.1.1 - SDK 10.7) [Lookup]
[not loaded] com.lexar.iokit.IOSCSILexarCommandsDevice (1.1.2) [Lookup]
[not loaded] com.lexarmedia.driver.IOUSBJumpshotClass (1.0.1) [Lookup]
[not loaded] com.pctools.iantivirus.kfs (1.0.1) [Lookup]
/System/Library/Extensions/2.2.0/Belcarra.USBLAN_netpart.kext/Contents/Plug-Ins
[not loaded] com.belcarra.iokit.netpart.panther (1.6.3) [Lookup]
/System/Library/Extensions/2.2.0/Belcarra.USBLAN_usbpart.kext/Contents/Plug-Ins
[not loaded] com.belcarra.iokit.usbpart.panther (1.6.3) [Lookup]
/System/Library/Extensions/2.2.0/RemoteControl.USBLAN_usbpart.kext/Contents/Plug-Ins
[not loaded] com.RemoteControl.USBLAN.panther (1.6.2) [Lookup]
System Launch Agents: ⓘ
[not loaded] 7 Apple tasks
[loaded] 179 Apple tasks
[running] 93 Apple tasks
System Launch Daemons: ⓘ
[failed] com.apple.locationd.plist (Apple, Inc. - installed 2016-10-21)
[not loaded] 41 Apple tasks
[loaded] 166 Apple tasks
[running] 105 Apple tasks
Launch Agents: ⓘ
[not loaded] com.adobe.AAM.Updater-1.0.plist (? ffb65062 17b9373f - installed 2010-10-03) [Lookup]
[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a23d420d.plist (Adobe Systems, Inc. - installed 2017-01-12) [Lookup]
[not loaded] com.adobe.CS5ServiceManager.plist (? 40cdc1ff 21868ea0 - installed 2010-10-12) [Lookup]
[running] com.brother.LOGINserver.plist (? a1772de2 41ad4933 - installed 2018-01-30) [Lookup]
[not loaded] com.oracle.java.Java-Updater.plist (? 0 ? - installed (null)) [Lookup]
Launch Daemons: ⓘ
[loaded] com.adobe.ARMDC.Communicator.plist (Adobe Systems, Inc. - installed 2017-01-12) [Lookup]
[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (Adobe Systems, Inc. - installed 2017-01-12) [Lookup]
[loaded] com.adobe.SwitchBoard.plist (? 68cad67 0 - installed 2010-10-03) [Lookup]
[loaded] com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2017-12-14) [Lookup]
[not loaded] com.apple.installer.cleanupinstaller.plist (? ? ? - installed 2018-01-29)
[loaded] com.microsoft.office.licensing.helper.plist (? 6d8cb30e afb3bef0 - installed 2010-08-25) [Lookup]
[not loaded] com.oracle.java.Helper-Tool.plist (? 0 ? - installed (null)) [Lookup]
[loaded] com.oracle.java.JavaUpdateHelper.plist (Oracle America, Inc. - installed 2014-06-03) [Lookup]
User Launch Agents: ⓘ
[not loaded] com.adobe.AAM.Updater-1.0.plist (? 6a3cceca 17b9373f - installed 2010-10-18) [Lookup]
[loaded] com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-08-10) [Lookup]
[not loaded] com.google.keystone.agent.plist (? 47d0f382 b0a42670 - installed 2015-02-12) [Lookup]
User Login Items: ⓘ
Dropbox Application
(/Applications/Dropbox.app)
Google Drive Application
(/Applications/Google Drive.app)
TrackballWorksHelper Application
(/Library/PreferencePanes/TrackballWorks.prefPane/Contents/Resources/TrackballWorksHelper.app)
Printer Pro Desktop Application
(/Applications/Utilities/Printer Pro Desktop.app)
Internet Plug-ins: ⓘ
OfficeLiveBrowserPlugin: 12.3.6 (installed 2013-03-12) [Lookup]
Flip4Mac WMV Plugin: 2.3.4.1 (installed 2010-06-15) [Lookup]
AdobePDFViewerNPAPI: 17.012.20098 (installed 2017-12-02) [Lookup]
FlashPlayer-10.6: 28.0.0.137 (installed 2018-01-09) [Lookup]
Silverlight: 5.1.50901.0 (installed 2017-09-24) [Lookup]
QuickTime Plugin: 7.7.3 (installed 2016-10-21)
Flash Player: 28.0.0.137 (installed 2018-01-09) [Lookup]
iPhotoPhotocast: 7.0 (installed 2010-10-03)
PepperFlashPlayer: 28.0.0.137 (installed 2018-01-09) [Lookup]
AdobePDFViewer: 18.009.20050 (installed 2017-12-02) [Lookup]
GarminGpsControl: 4.2.0.0 (installed 2014-03-31) [Lookup]
SharePointBrowserPlugin: 14.7.7 (installed 2018-01-01) [Lookup]
JavaAppletPlugin: 15.0.1 (installed 2016-02-08) Check version
User internet Plug-ins: ⓘ
CitrixOnlineWebDeploymentPlugin: 1.0.105 (installed 2013-04-25) [Lookup]
Safari Extensions: ⓘ
[enabled] Amazon Assistant for Safari - Amazon -
https://www.amazon.com/gp/BIT/AmazonAssistant/TOU?tag=macforums0e4-20 (installed 2018-01-13)
[not loaded] Awesome Screenshot - Diigo -
http://www.diigo.com/ (installed 2015-09-18)
[enabled] Honey - Honey Science Corporation -
https://www.joinhoney.com (installed 2017-12-12)
3rd Party Preference Panes: ⓘ
Flash Player (installed 2017-12-14) [Lookup]
Flip4Mac WMV (installed 2010-06-15) [Lookup]
TrackballWorks (installed 2016-11-21) [Lookup]
Time Machine: ⓘ
Skip System Files: NO
Mobile backups: OFF
Auto backup: YES
Volumes being backed up:
[redacted]: Disk size: 999.35 GB Disk used: 166.66 GB
Destinations:
LaCie [Local]
Total size: 999.86 GB
Total number of backups: 5
Oldest backup: 2/16/16, 10:33 PM
Last backup: 6/29/17, 6:57 PM
Size of backup disk: Adequate
Backup size 999.86 GB > (Disk used 166.66 GB X 3)
Top Processes by CPU: ⓘ
10% mds
3% mdworker
3% mdworker
3% mdworker
3% WindowServer
Top Processes by Memory: ⓘ
817 MB kernel_task
473 MB Safari
360 MB com.apple.WebKit.WebContent
316 MB com.apple.WebKit.WebContent
248 MB com.apple.WebKit.WebContent
Top Processes by Network Use: ⓘ
Input Output Process name
161 KB 137 KB mDNSResponder
146 KB 145 KB Dropbox
27 KB 48 KB apsd
19 KB 18 KB com.apple.WebKit.Networking
5 KB 4 KB assistantd
Top Processes by Energy Use: ⓘ
5.28 WindowServer
3.42 ReportCrash
0.86 launchd
0.66 Google Drive
Virtual Memory Information: ⓘ
2.03 GB Available RAM
162 MB Free RAM
5.97 GB Used RAM
1.87 GB Cached files
105 MB Swap Used
Software installs (last 30 days): ⓘ
Adobe Flash Player: (installed 2018-01-09)
Adobe Pepper Flash Player: (installed 2018-01-09)
Firmware Update Tool: (installed 2018-01-30)
Brother Drivers: (installed 2018-01-30)
Brother Drivers: (installed 2018-01-30)
Install information may not be complete.
Diagnostics Events (last 3 days for minor events): ⓘ
2018-02-01 17:25:29 locationd Crash [Open]
2018-02-01 14:32:26 Preview.app Hang [Open]
2018-02-01 13:30:47 cleanup_installer Crash [Open]
2018-02-01 13:30:14 Last shutdown cause: 3 - Hard shutdown
Files deleted by EtreCheck: ⓘ
2018-01-31 17:22:15 - com.adobe.ARM.[...].plist - Unknown
2018-01-31 17:22:15 - ~/Library/LaunchAgents/com.apple.CSConfigDotMacCert-[redacted]@me.com-SharedServices.Agent.plist - Unknown
2018-01-31 17:22:21 - /Library/LaunchDaemons/com.fitbit.galileod.plist - Unknown
2018-02-01 13:47:06 - /Library/LaunchAgents/com.hp.launchagent.plist - Unknown