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  1.    08 Jul 2017 #11
    Join Date : Feb 2017
    Posts : 36
    Windows 10
    Thread Starter

    Quote Originally Posted by Bree View Post
    Prevent, not that I know of, but you can defragment the drive the ISOs are on. You'll find 'Defragment and Optimize Drives' under 'Windows Administrative Tools' in the Start menu's 'All apps'. Or just type defrag in the Cortana/Search box. Defragmenting a drive should also consolidate the free space, making it less likely that the next ISO you save to it will end up fragmented.
    Didn't work, still can't mount ISO after the defragment.
    Guess I'll have to wait for another update to fix this?
    Or do you have another suggestion?

    Quote Originally Posted by jimbo45 View Post
    For Win8 / 8.1 and 10 plus the relevenat server versions file explorer will mount isos corectly. If your Windows 10 fails (whether a VM or a REAL machine) then your windows installation has got a serious defect in it --i.e it's seriously broken !!!

    Cheers
    jimbo
    I don't think so, if you look at the site provided by Bree https://social.technet.microsoft.com...10itprogeneral
    It's a bug in a security update KB4019472 ,where this problem appeared right after my cumulative update.

    Users fixed the problem by uninstalling the above update. sadly I can't do that, since my update comes as a huge package -_-
      My ComputerSystem Spec
  2.    08 Jul 2017 #12
    Join Date : Dec 2015
    Posts : 5,974
    Windows10

    Quote Originally Posted by Kari View Post
    Just to clarify this: I have never had any issues in mounting ISO images on a VM. In fact, I always upgrade my Hyper-V virtual machines using a mounted ISO made with UUPtoISO tool on that same virtual machine, or from an ISO copied over from host or another virtual machine.

    Kari
    I think you have misunderstood. If you try and mount an iso directly from within a Hyper-v virtual machine ( I double clicked on mrf.iso), you get the following message:

    Click image for larger version. 

Name:	image.png 
Views:	37 
Size:	21.1 KB 
ID:	143035

    However, I can set up a "dvd drive" externally in hyper-v and it is mounted fine using mrf.iso.
      My ComputerSystem Spec
  3.    08 Jul 2017 #13
    Join Date : Oct 2013
    A Finnish expat in Germany
    Posts : 12,976
    Windows 10 Pro

    Quote Originally Posted by cereberus View Post
    I think you have misunderstood. If you try and mount an iso directly from within a Hyper-v virtual machine ( I double clicked on mrf.iso), you get the following message:
    No, that is not true. I do not get any error messages, nor have I misunderstood anything regarding this matter.

    My dear esteemed fellow geek, it's you who have clearly misunderstood something. If your VM acts erratic, not as it should work, you need to try to find what's causing it, instead of boldly stating that it's how virtual machines work in general.

    Without any more words, here's a 25 second video I just captured. In the video is EN-GB W10 PRO x64 build 16226 Hyper-V VM on which I created build 16237 ISO earlier today with UUPtoISO tool. I simply double click that ISO on VM's UUPtoISO folder and it will be immediately mounted.



    You might want to try copying the ISO to another place within VM and try to mount it again.

    Kari
      My ComputerSystem Spec
  4.    08 Jul 2017 #14
    Join Date : Feb 2017
    Posts : 36
    Windows 10
    Thread Starter

    Thank you for the plenty of information Cerberus and Kari.
    But how we end from "Windows can't mount ISO problem" to "VM can/can't mount ISO" war xD

    I'm not using a VM. It's the original windows main system.
    Thank you.
      My ComputerSystem Spec
  5.    08 Jul 2017 #15
    Join Date : Oct 2013
    A Finnish expat in Germany
    Posts : 12,976
    Windows 10 Pro

    Quote Originally Posted by black View Post
    Thank you for the plenty of information Cerberus and Kari.
    But how we end from "Windows can't mount ISO problem" to "VM can/can't mount ISO" war xD

    I'm not using a VM. It's the original windows main system.
    Thank you.
    Have you already tried to copy ISO to another folder as suggested by Fafhrd:

    Quote Originally Posted by Fafhrd View Post
    If a disk image - ISO, VHD, WIM, etc., is not contiguous - meaning: in a single piece from start to finish, and not fragmented in more than one part of the storage medium - it will not be able to be mounted by File Explorer. If copied elsewhere, usually the copy is contiguous and can be mounted.

    When a large file is copied to the same folder, it is copied in manageable pieces to the final physical disk location before the original is deleted - how could it be any other way?
      My ComputerSystem Spec
  6.    08 Jul 2017 #16
    Join Date : Feb 2017
    Posts : 36
    Windows 10
    Thread Starter

    Quote Originally Posted by Kari View Post
    Have you already tried to copy ISO to another folder as suggested by Fafhrd:

    Yes stated that in my first post, if copied to any location even same folder, they can be mounted.
      My ComputerSystem Spec
  7.    08 Jul 2017 #17
    Join Date : Dec 2015
    Posts : 5,974
    Windows10

    Quote Originally Posted by Kari View Post
    No, that is not true. I do not get any error messages, nor have I misunderstood anything regarding this matter.

    My dear esteemed fellow geek, it's you who have clearly misunderstood something. If your VM acts erratic, not as it should work, you need to try to find what's causing it, instead of boldly stating that it's how virtual machines work in general.

    Without any more words, here's a 25 second video I just captured. In the video is EN-GB W10 PRO x64 build 16226 Hyper-V VM on which I created build 16237 ISO earlier today with UUPtoISO tool. I simply double click that ISO on VM's UUPtoISO folder and it will be immediately mounted.



    You might want to try copying the ISO to another place within VM and try to mount it again.

    Kari
    HMM - I have always had this issue in different VMS in different pcs. I cannot understand why I get it. I searched web and others stated it was a hyper-v issue. I have tried moving it to several locations - always same. I guess it is one of life's mysteries.

    My VMS are NTFS and isos are mostly fat32.

    No big deal as I can easily get round issue.
      My ComputerSystem Spec
  8.    08 Jul 2017 #18
    Join Date : Oct 2013
    A Finnish expat in Germany
    Posts : 12,976
    Windows 10 Pro

    Quote Originally Posted by cereberus View Post
    HMM - I have always had this issue in different VMS in different pcs. I cannot understand why I get it. I searched web and others stated it was a hyper-v issue. I have tried moving it to several locations - always same. I guess it is one of life's mysteries.

    My VMS are NTFS and isos are mostly fat32.

    No big deal as I can easily get round issue.
    As I mentioned, I have never had any issues in mounting ISO images on virtual machines, on any host. That's for instance how I upgrade them. Think logically: why on earth would such a basic feature not work on a VM?
      My ComputerSystem Spec
  9.    09 Jul 2017 #19
    Join Date : Dec 2015
    Posts : 5,974
    Windows10

    Quote Originally Posted by Kari View Post
    As I mentioned, I have never had any issues in mounting ISO images on virtual machines, on any host. That's for instance how I upgrade them. Think logically: why on earth would such a basic feature not work on a VM?
    You are of course correct,but when was MS always logical :-).

    One thing that has always annoyed me is the fact I cannot upgrade a build when it is in a vhd attached to host, but can when it is in a VM. OK, I get round this by attaching vhd to VM, upgrade, then reattach vhd to host, and because Windows 10 is good at sorting drivers, no need to sysprep.
      My ComputerSystem Spec
  10.    09 Jul 2017 #20
    Join Date : Oct 2013
    A Finnish expat in Germany
    Posts : 12,976
    Windows 10 Pro

    Quote Originally Posted by black View Post
    Yes stated that in my first post, if copied to any location even same folder, they can be mounted.
    As there's this easy workaround which works, the issue really is a minor one although somewhat annoying. If it is a certain Windows update causing this, you could try hiding that update permanently.

    The best way to do it using PowerShell PSWindowsUpdate module, see this tutorial for setting up PSWindowsUpdate: Update and Upgrade Windows 10 using PowerShell Windows 10 Installation Upgrade Tutorials

    Part Three in above mentioned tutorial shows how to hide unwanted updates.

    Kari
      My ComputerSystem Spec

 
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