Hi Ronni

I am pleased - very pleased - to report success.  High Sierra has successfully 
installed.  Security Update 2018-001 also installed.  With three different 
model Macs I had three completely different experiences!

Thank you for your guidance through this exercise.  There are some slightly odd 
things still happening, but I will let the iMac (and me) settle down before I 
look at what I hope will be simple separate issues.

The actions I took between the Download and Installation seem innocuous, but - 
-.
1. The download completed successfully via the “software updates available” 
notification route.  It presented the expected install window.  This failed at 
the “Install on Mac HD” step with a black screen. This seemed to be the point 
that the “helper” file should be downloaded. 
2.  I shut down the Mac and did an SMC reset before starting the Mac a few 
hours later.
3.  I deleted the Macs Fan Control app.  This was set up purely as a monitoring 
utility and not to alter fan speed settings.  But it was an active process that 
has its tentacles into the deep workings of the system.  I also have MFC 
installed on the late 2012 iMac and the High Sierra installation went without 
any hitch on that computer.
4.  I launched “Install macOS High Sierra” from Finder, not from Launchpad (I 
think).
5.  The install process paused at the  “Install on Mac HD” step; the screen 
went black.  After a few seconds I got an alert tone (single steady tone) then 
a few seconds later it displayed a window to authorise download of the High 
Sierra “helper” file.  And proceeded to install without further trouble.

Thank again for your advice.  No doubt I will be asking for more help at a 
later date!

Cheers (times 3)
Alan


> On 2 May 2018, at 10:16 am, Alan Smith <[email protected]> wrote:
> 
> Hi Ronni
> 
> I am pleased to report progress.  But still not success.  The Install macOS 
> High Sierra app has downloaded but will not install.  Details of recent 
> events follow. 
> 
>  Do you want to continue with this original thread?  Your assistance is 
> appreciated but you may wish to close off your help file.  I could start a 
> new posting later, but I’m not ready to immediately respond.  At least it 
> seems there is hope: I haven’t created a door stop and the biggest iPod in 
> the world is still limping along. 
> 
> Early this morning I woke the iMac on my way to boil the kettle for coffee - 
> and got an Apple Notification that software updates were ready to install.  I 
> responded with my usual “later - tell me again tomorrow”, then opened App 
> Store to see what software it was.  High Sierra!  Was this meant to be?  I 
> had almost finished the pre-installation checks and clean up of apps etc, so 
> was “near enough".  I selected “Install” from the update list.
> 
> High Sierra downloaded a 5.23 GB file in one step. Earlier attempts at 
> downloading involved several steps - download of an installer file of about 
> 23 MB and then a small helper file before the real download began (but never 
> arrived).
> 
> The Install macOS High Sierra window opened so I clicked the Continue button. 
>  I accepted T&C but the "Install on Mac HD" button did not respond.
> 
> There is a corresponding Console activity log entry when I press the Install 
> button.  This refers to "InstallAssistant_plain: unable to simultaneously 
> satisfy constraints" and then has several lines of details, including details 
> about NS autosize and Mask layout.
> 
> Here are two of the things I’ve done as part of Mac clean-up.  They may show 
> some light on the original “endless loop” problem and the new “will not 
> install” problem.
> 
> 1. I downloaded three apps from App Store to test if general apps were 
> failing too.  The apps downloaded but one crashes on launch. The associated 
> Console log messages include NS Mask layout failures.  Not quite the same 
> message as given by the High Sierra Installer, but  perhaps the same area.
> 
> 2. Apple Hardware Test via original install cd returned a 4 MEM error. I 
> located and removed the faulty Amicroe 4 GB RAM module.  2009 Mac now reduced 
> to 8 GB of RAM. 
> 
> I have not pursued or made web searches for clues on the new behaviour. My 
> internet access completely failed around 9:00 am.  This since returned but no 
> iiNet network status entry to explain it.  
> 
> Hope this sheds some light on things. 
> 
> Cheers
> Alan
> 
> 
>> On 29 Apr 2018, at 12:02 pm, Ronda Brown <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> Hi Alan,
>> Spotlight takes quite a long time as it has to Reindex the drive.
>> Also when it has finished.
>> Check your hard drive do a Repair in Disk Utility. Just use Disk Utility on 
>> the iMac to Repair the drive, might be a couple of ‘niggles’ need repairing 
>> on the Drive.
>> 
>> Cheers 
>> Ronni
>> 
>> Sent from Ronni's iPhone 7 Plus
>> 
>> On 29 Apr 2018, at 10:43 am, Alan Smith <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>>> Hi Ronni
>>> 
>>> An update, just for information.
>>> 
>>> Couldn’t resist getting on with the job.  I  did a complete restoration 
>>> from the SuperDuper bootable backup. There was a problem.
>>> 
>>> Very slow on restarting first time after Restore.   Not all menu bar app 
>>> icons had loaded.  I allowed a few minutes but no progress.  I started a 
>>> song in iTunes and it worked - for about one minute, then the system 
>>> crashed.  “Your computer was restarted because of a problem”.  The problem 
>>> report of the panic showed BSD process was mds.  Comment was “a freed zone 
>>> element has been modified: expected (x)  but found (y) etc”.  So probably 
>>> just a Spotlight indexing issue. 
>>> 
>>> I did an SMC reset.  Mac now looks ok, menu bar icons ok and  iTunes music 
>>> has been playing ok for last hour.
>>> 
>>> I can now gradually do all the little things before I try for another High 
>>> Sierra download.
>>> 
>>> Cheers
>>> Alan
>>> 
>>> 
>>>> On 28 Apr 2018, at 8:58 pm, Alan Smith <[email protected] 
>>>> <mailto:[email protected]>> wrote:
>>>> 
>>>> Hi Ronni
>>>> 
>>>> I exclude ~/Music from TM backups because there is no need for it.  I have 
>>>> several other copies of my iTunes music, apart from formal SuperDuper 
>>>> backups.  On other devices I try to keep such libraries on an external 
>>>> drive to keep the actual computer clean and mean.  The 2009 Mac iTunes 
>>>> library also has a changing content of videos copied from my master 
>>>> collection on an external drive.  I keep a selection of favourite videos 
>>>> for those Apple TV times when I am immobile and the Mac mini is otherwise 
>>>> occupied with Eye TV recording or processing.  I used to get video 
>>>> artefacts from time to time when the more powerful 27 inch iMac had to do 
>>>> all the work.  By the way, most of my home network is wired ethernet. 
>>>> 
>>>> With three computers writing their Time Machine backups to one Time 
>>>> Capsule  drive I found large backups worked but were were often delayed.  
>>>> Time Machine backups from three computers to the equivalent Netgear router 
>>>> were not reliably managed at all.  I bought the Netgear because the Time 
>>>> Capsule showed early signs of failure.  In practice I run dual backups for 
>>>> each computer using a local external drive plus  the central Time Capsule. 
>>>>  I even run a third TM backup for the main 27 inch iMac to a “network" 
>>>> drive on the Netgear router.  It copes with a single data source without 
>>>> issues.  
>>>> 
>>>> The 2009 iMac local external dedicated Time Machine drive is a Firewire 
>>>> 800 WD My Book Studio. This is quick and easy to use.  The SuperDuper 
>>>> backup shares a partitioned drive with the 27 inch Mac on a Seagate GoFlex 
>>>> drive that annoys me a bit.  It always makes lots of clunky sounds 
>>>> whenever it is plugged in - possibly clogging up Spotlight with unwanted 
>>>> data!  And I’ve used Time Machine Restore previously and found it quick, 
>>>> quiet and reliable.  And I’ve not made a full Restore using SuperDuper 
>>>> before.
>>>> 
>>>> Why would you re-install the complete os and data, including the iTunes 
>>>> files, anyway?  
>>>> 
>>>> My current thoughts about the problem is that is NOT an endless loop of 
>>>> one download after another.  I think the real download fails very early in 
>>>> the sequence, but the App Server just keeps pumping out bytes but there is 
>>>> no “Install” file to write it to. 
>>>> 
>>>> Thank you, I received your H.S. Upgrade tutorial and all conditions are 
>>>> fulfilled or in hand.  Must catch up with my real life so will not have so 
>>>> much time for this simple little task of installing HS for a while.
>>>> 
>>>> And thanks again for keeping me at the task and for your prompt responses.
>>>> 
>>>> Cheers
>>>> Alan
>>>> 
>>>> 
>>>>> On 28 Apr 2018, at 12:39 pm, Ronda Brown <[email protected] 
>>>>> <mailto:[email protected]>> wrote:
>>>>> 
>>>>> Hi Alan,
>>>>> 
>>>>> Why would you exclude your ~/Music folder from TM backups when you wanted 
>>>>> to use the 2009 iMac to listen to music?
>>>>> Why didn’t you do a complete system restore using your SuperDuper! backup 
>>>>> that has your complete system backed up - that you did just before you 
>>>>> commenced trying to upgrade the iMac to High Sierra?
>>>>> 
>>>>> 1. I would do a full system restore from the SuperDuper! backup first as 
>>>>> it has the whole computer system (including ~/Music folder) backed up.
>>>>>  
>>>>> 2.Then if you received my tutorial ‘PREPARE TO UPGRADE TO HIGH SIERRA 
>>>>> 10.13 I sent to you “OffList” last night. Follow that, before attempting 
>>>>> to download and install High Sierra!
>>>>> 
>>>>>> The full SuperDuper backup is 142.9 GB.  The ~/Music folder is 118.7 GB. 
>>>>>>  Therefore OS and data is 23.2 GB.
>>>>> 
>>>>> My calculation is 24.2GB but it’s not really important.
>>>>> 
>>>>> Cheers,
>>>>> Ronni
>>>>> 
>>>>>  Ronni Brown’s iPad Pro 12.9-inch 256GB 
>>>>> 
>>>>> 
>>>>> On 28 Apr 2018, at 10:34 am, Alan Smith <[email protected] 
>>>>> <mailto:[email protected]>> wrote:
>>>>> 
>>>>>> Hi Ronni
>>>>>> 
>>>>>> The whole system was restored from Time Machine except for  the ~/Music 
>>>>>> folder which is excluded in backup options.  
>>>>>> 
>>>>>> The newly restored 2009 iMac with OSX 10.9.5 Mavericks is 23.99 GB.
>>>>>> The full SuperDuper backup is 142.9 GB.  The ~/Music folder is 118.7 GB. 
>>>>>>  Therefore OS and data is 23.2 GB.
>>>>>> 
>>>>>> How is this so?  I have three Macs. 
>>>>>> 
>>>>>> The  27 inch late 2012 iMac (High Sierra) is my workhorse.  This was 
>>>>>> bought to replace the 21.5 inch late 2009 iMac (Mavericks) which had an 
>>>>>> argument with lightning and lost its ethernet port.  The “new" computer 
>>>>>> developed a problem during 2017 - it shuts itself down after being 
>>>>>> active for around 5 days and requires an SMC reset before restarting.  
>>>>>> Not very useful for EyeTV recording and AppleTV etc.  I eventually took 
>>>>>> it to the Apple Genius Bar for repair.  Not happy about that experience. 
>>>>>>  Suffice to say they didn’t fix it.  Hence - -
>>>>>> 
>>>>>> I bought an SSD Mac mini as my media machine. Stays powered on 24/7 for 
>>>>>> EyeTV recording and processing, and for Apple TV.  Most data (movies 
>>>>>> etc) are on an external high capacity hard drive.  Hence - - 
>>>>>> 
>>>>>> The 2009 Mavericks machine became my kitchen computer which I use it for 
>>>>>> Safari, playing music and occasional Zoom video meetings.  I only 
>>>>>> occasionally shut it down even 'tho it is a gas guzzler compared to the 
>>>>>> later model Macs.
>>>>>> 
>>>>>> Yes, Ronni, I did Restore (almost) the whole system!
>>>>>> 
>>>>>> I will restore the Music folder from the SuperDuper backup.  I will 
>>>>>> check out the computer and  prepare it for High Sierra.  May take a few 
>>>>>> days.
>>>>>> 
>>>>>> What is your advice for the next step?  Try a new App Store download?
>>>>>> 
>>>>>> Cheers
>>>>>> Alan
>>>>>> 
>>>>>> 
>>>>>>> On 28 Apr 2018, at 7:58 am, Ronda Brown <[email protected] 
>>>>>>> <mailto:[email protected]>> wrote:
>>>>>>> 
>>>>>>> Hi Alan,
>>>>>>> 
>>>>>>> I asked you to Restore the whole system! It will take much longer than 
>>>>>>> 20mins.
>>>>>>> 
>>>>>>>>>> Restore the complete contents of your hard drive from the Time 
>>>>>>>>>> Machine backup you did before you commenced trying to upgrade to 
>>>>>>>>>> High Sierra.
>>>>>>>>>> Or Restore from the SuperDuper you did before you commenced trying 
>>>>>>>>>> to upgrade to High Sierra.
>>>>>>> 
>>>>>>> Time Machine automatically backs up your entire Mac, including system 
>>>>>>> files, applications, accounts, preferences, email messages, music, 
>>>>>>> photos, movies, and documents.
>>>>>>> 
>>>>>>> Restore From Time Machine Backup: Restore your Mac from an external 
>>>>>>> hard drive or Time Capsule that contains a Time Machine backup 
>>>>>>> <https://support.apple.com/kb/HT201250> of your Mac.
>>>>>>> 
>>>>>>> How to restore your hard drive from a Time Machine backup
>>>>>>> Whether you're having major problems with your current hard drive or 
>>>>>>> upgrading to a new Mac, Time Machine can help you get back to business.
>>>>>>> 
>>>>>>> Power up your Mac and hold down the Command and R keys to enter the 
>>>>>>> macOS Recovery Partition. Your Mac should boot to a screen that says 
>>>>>>> macOS Utilities.
>>>>>>> Select Restore from Time Machine Backup and click Continue.
>>>>>>> Read the info on the Restore Your System page and click Continue.
>>>>>>> Select your Time Machine backup and click Continue.
>>>>>>> Select the most recent backup of your hard disk and click Continue. 
>>>>>>> Your Mac will then restore the Time Machine backup; once it's done it 
>>>>>>> will restart.
>>>>>>> Cheers,
>>>>>>> Ronni
>>>>>>> 
>>>>>>>  Ronni Brown’s iPad Pro 12.9-inch 256GB 
>>>>>>> 
>>>>>>> 
>>>>>>> On 28 Apr 2018, at 7:07 am, Alan Smith <[email protected] 
>>>>>>> <mailto:[email protected]>> wrote:
>>>>>>> 
>>>>>>>> Correction and update!
>>>>>>>> 
>>>>>>>> There is probably no missing data or folders. I forgot that  ~/Music 
>>>>>>>> is excluded from TM backups.  Also I don’t use Mail on this iMac so 
>>>>>>>> the Contacts app would have no cards.  Sorry for this.  I assume 
>>>>>>>> Recovery Mode looked at the total history data of Time Machine to 
>>>>>>>> calculate the remaining restoration time.  
>>>>>>>> 
>>>>>>>> I will proceed with normal testing of apps and data - and will wait 
>>>>>>>> for Ronni’s advice before I attempt a new download of High Sierra.
>>>>>>>> 
>>>>>>>> Alan
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>>> On 28 Apr 2018, at 6:23 am, Alan Smith <[email protected] 
>>>>>>>>> <mailto:[email protected]>> wrote:
>>>>>>>>> 
>>>>>>>>> Hi Ronni
>>>>>>>>> 
>>>>>>>>> I did a restore from Time Machine via Recovery mode for data at 25 
>>>>>>>>> April, but got a strange outcome.
>>>>>>>>> 
>>>>>>>>> After about 20 minutes with around 15% restore and estimated 2 hours 
>>>>>>>>> remaining, I got the “Restore Succeeded” window with a “Restart to 
>>>>>>>>> Continue" banner.  This proceeded normally to login and then to 
>>>>>>>>> prompts similar to a new OS installation.  
>>>>>>>>> 
>>>>>>>>> The desktop display looked normal superficially.  The Dock showed 
>>>>>>>>> some apps that had been removed some time ago. The Finder sidebar 
>>>>>>>>> showed the default options, not my preferences.
>>>>>>>>> 
>>>>>>>>>  I opened a few apps.  Some seemed OK but Contacts only has 2 cards 
>>>>>>>>> (Apple inc and Me) and iTunes gave a “no library found” message.  The 
>>>>>>>>> “Music” folder in the Home directory is empty - no iTunes folders!  
>>>>>>>>> Finder shows 975GB available on the 1TB hard drive. I was expecting 
>>>>>>>>> around 850GB free.  iTunes would probably account for most of the 
>>>>>>>>> missing data - say 65GB music plus some movies and videos.
>>>>>>>>> 
>>>>>>>>> I have not attempted any data recovery or conducted detailed tests of 
>>>>>>>>> apps.  I will wait for your comments before I proceed.
>>>>>>>>> 
>>>>>>>>> Cheers
>>>>>>>>> Alan
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> On 27 Apr 2018, at 8:13 pm, Ronni Brown <[email protected] 
>>>>>>>>>> <mailto:[email protected]>> wrote:
>>>>>>>>>> 
>>>>>>>>>> Hi Alan,
>>>>>>>>>> 
>>>>>>>>>>> On 27 Apr 2018, at 6:21 pm, Alan Smith <[email protected] 
>>>>>>>>>>> <mailto:[email protected]>> wrote:
>>>>>>>>>>> 
>>>>>>>>>>>> 
>>>>>>>>>>>> It might be best to go back and install the backup you did in 
>>>>>>>>>>>> Mavericks 10.9.5 before you commenced trying to upgrade to High 
>>>>>>>>>>>> Sierra.
>>>>>>>>>>> 
>>>>>>>>>>> Do you mean reinstall the OS via the Recovery utility or a complete 
>>>>>>>>>>> copy of OS and data from Time Machine (or Super Super)? 
>>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Restore the complete contents of your hard drive from the Time 
>>>>>>>>>> Machine backup you did before you commenced trying to upgrade to 
>>>>>>>>>> High Sierra.
>>>>>>>>>> Or Restore from the SuperDuper you did before you commenced trying 
>>>>>>>>>> to upgrade to High Sierra.
>>>>>>>>>> 
>>>>>>>>>> The SuperDuper Manual will show you How To Restore from SD Backup.
>>>>>>>>>> If you need more details I did a PDF Tutorial for a client some time 
>>>>>>>>>> back … "How to Restore from a SuperDuper! Backup.pdf”
>>>>>>>>>> If you need details how to "Restore the complete contents of your 
>>>>>>>>>> hard drive from a Time Machine backup” I’ll post details to the list.
>>>>>>>>>> 
>>>>>>>>>> I have been doing support work since 5:30am this morning, so I’m now 
>>>>>>>>>> signing off for tonight. 
>>>>>>>>>> 
>>>>>>>>>> Cheers,
>>>>>>>>>> Ronni
>>>>>>>>>> 
>>>>>>>>>> 13-inch MacBook Air (April 2014)
>>>>>>>>>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
>>>>>>>>>> 8GB 1600MHz LPDDR3 SDRAM
>>>>>>>>>> 512GB PCIe-based Flash Storage
>>>>>>>>>> 
>>>>>>>>>> macOS High Sierra 10.13.4
>>>>>>>>>> 
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