Anniversary update fails, leaving system unbootable

  1. Posts : 147
    Windows XP, 10; Knoppix [Debian] linux
       07 Aug 2016 #1

    Anniversary update fails, leaving system unbootable

    Perhaps someone can tell me what went wrong here.

    I have a bottom-rung Dell Inspiron 330s that I inherited from a family member. It shipped with Win7 Home, and while it was eligible I had updated it to Win10 1511. Very little if anything on it ... pretty much a vanilla system. Not even third-party drivers. Every few months I'd turn it on to get updates. MBR hard disk, no UEFI.

    Since it's unused at present I decided to try the Anniversary Update as a practice run. Booted the machine to 1511 as usual, everything looked fine. I did the update the same way I had done 1511 on this and perhaps a dozen other machines - copied the ISO to a temp directory on the C: drive, mounted it, and run setup.exe

    The first phase of the setup ran to perhaps ~55% (I had looked away for a few minutes). When I looked again, the 1511 desktop was back with a little white alert box saying that the update had failed. No error message or reason.

    I checked the update history and there was no error related to this attempt. Ran the Windows Update troubleshooter, which said it had found and repaired a problem with the Windows Update service. Then a message came on the screen telling me that the drive was damaged, click here to reboot and repair.

    Despite the chorus of characters dancing in front of me and yelling "***DON'T DO IT!!!***", I "clicked here" and the machine tried to reboot and failed with a message that there is no bootable OS. Tried booting a real 1607 install DVD and it just hung at the blue Windows logo. So I booted a WinPE disk and had a look at the drive with AOMEI.

    There were three partitions:
    39.19 MB FAT-16 (Dell diagnostic)
    21.67 GB NTFS (Recovery, boot)
    444.06 GB NFTS (OS, boot)

    The recovery partition was unreadable. Ran chkdsk which found errors in the index file; after repair I could get a directory listing. Kept running chkdsk to be sure it found no errors ... looked good. Deleted the Dell diagnostic partition just in case, though I had never read any reports that this caused issues on OS update (it certainly hadn't when going from Win7 to Win10 1511).

    Now I booted the 1607 install DVD successfully, and had it repair the system. On reboot I was back to the 1511 desktop as before. Going for broke, I tried an upgrade install using an EXTERNAL drive as the source (my Zalman enclosure with virtual optical drive function). This time the install went smoothly without errors, and the system is now running 1607.

    What happened?
    Dell partition confusing things?
    Issues with mounting the install ISO on a running OS?
    Already-corrupted recovery partition which just happened to work first time, every time, until today?

    Think I'll wait before attempting another machine...
      My ComputerSystem Spec

  2. Posts : 235
    Win10 Ver. 1809 Build 17763.`
       08 Aug 2016 #2

    Your solution will probably be near the end of this thread - but read the whole thing.

    How to determine what caused Anniversary Update to fail - Windows 10 Forums
      My ComputerSystem Spec

  3. Posts : 147
    Windows XP, 10; Knoppix [Debian] linux
    Thread Starter
       08 Aug 2016 #3

    bbinnard said: View Post
    Your solution will probably be near the end of this thread - but read the whole thing.

    How to determine what caused Anniversary Update to fail - Windows 10 Forums
    Thanks for the pointer.

    I take it, then, that the original 444.06 GB reserved partition was too small for Windows 10 and things might have gone better if I had created a 500 GB partition up front.

    But on my second try, after simply reparing the file system on that 444.06 GB partition, the install was successful ... why?

    (Thinking out loud: maybe when I allowed the 1607 boot disk to "Repair" the 1511 installation, it created a larger recovery partition? Must admit that I was so happy when the install completed successfully that I failed to go back and see what the final disk structure looked like. Will do that tonight)
    Last edited by mike s; 08 Aug 2016 at 08:26.
      My ComputerSystem Spec


Related Threads
So I try to restore any point and get an error: 35772 I have turned off Malwarebytes and SuperAntiSpyware. I also did a sfc /scannow with no integrity violations. Running Windows 10 Pro 64bit... Any suggestions?
I've tried switching themes, changing colours etc. etc. no difference. What's with this latest "upgrade" that would alter only the colour of the system clock font? It's happened on both of my Windows 10 installations. I do have the Aerolite...
Hi, I just downloaded and installed the Windows 10 Anniversary Update yesterday and so far I have noticed some changes in my computer that I was not aware of before the update. (1) Somehow my System Restore was set to Disabled and all of my...
I am downloading the update manually. Have others had the same issue with windows update not showing the update? I'm not sure my WU is working because of this.
Not cause by virus .. this just started today. I tried a restore point of yesterday .. nothing. I have tried several suggestions from the web but nothing seems to do it? I know it would be better if i could name them but can't remember the exact...
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 01:30.
Find Us