Event error 257 - MS Windows Defrag

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  1. Posts : 11,360
    Windows 10 Home x64 Version 21H2 Build 19044.1706
       #11

    The link I added might help.

    Denis
      My Computer


  2. Posts : 897
    windows 10 professional 64-bit, 21H2
    Thread Starter
       #12

    Try3 said:
    The link I added might help.

    Denis
    Thank you. I went to the link. It says to power off the virtual machine, but I don't even know if I have a virtual hard disk. My Win10 machine is networked to my WinXP machine & I have 2 external drives connected to my Win10 machine. I alternate backup images, using Macrium Reflect, to these external drives.

    Other than that, I have no other drives that I'm aware of.
      My Computers


  3. Posts : 11,360
    Windows 10 Home x64 Version 21H2 Build 19044.1706
       #13

    phrab said:
    ... I don't even know if I have a virtual hard disk ...
    It was shown in your diagram and was the subject of that error message "The volume PortableBaseLayer (C:\ProgramData\Microsoft\Windows\Containers\BaseImages\5d343fbd-856b-46b5-a4f3-797bd4a539a0\BaseLayer"


    Amongst the comments in that link was one about checking the space available in the host drive [rather than in the virtual drive itself].

    Denis
      My Computer


  4. Posts : 897
    windows 10 professional 64-bit, 21H2
    Thread Starter
       #14

    Try3 said:
    It was shown in your diagram and was the subject of that error message "The volume PortableBaseLayer (C:\ProgramData\Microsoft\Windows\Containers\BaseImages\5d343fbd-856b-46b5-a4f3-797bd4a539a0\BaseLayer"


    Amongst the comments in that link was one about checking the space available in the host drive [rather than in the virtual drive itself].

    Denis
    Thank you again. I saw that. I assume my host drive is my C drive. Iím at a hospital right now, so Iím not by my computer, but itís a 1 TB size, & plenty of free space. The instructions say to turn off the virtual machine & I donít know what that is. I wasnít even aware that I have one.

    Can you tell me how I can find out or access it?
      My Computers


  5. Posts : 11,360
    Windows 10 Home x64 Version 21H2 Build 19044.1706
       #15

    I have only ever had virtual hard drives present because I've 'mounted' a system image file in order to find something in it. So simply 'unmounting' it was all I've had to do.
    Manage Virtual Hard Disks (VHD) - MSDocs
    Mount or Unmount VHD and VHDX File - TenForumsTutorials

    But if you might have created it as part of a much larger task such as creating a virtual machine then I cannot help as I've never done that. If that is the case, unless somebody else chips in here, I'd say your best bet is to ask in a new thread. I'm always seeing references to virtual machines in this forum so you'll get decent guidance from somebody.


    Denis
      My Computer


  6. Posts : 897
    windows 10 professional 64-bit, 21H2
    Thread Starter
       #16

    Try3 said:
    I have only ever had virtual hard drives present because I've 'mounted' a system image file in order to find something in it. So simply 'unmounting' it was all I've had to do.
    Manage Virtual Hard Disks (VHD) - MSDocs
    Mount or Unmount VHD and VHDX File - TenForumsTutorials

    But if you might have created it as part of a much larger task such as creating a virtual machine then I cannot help as I've never done that. If that is the case, unless somebody else chips in here, I'd say your best bet is to ask in a new thread. I'm always seeing references to virtual machines in this forum so you'll get decent guidance from somebody.


    Denis
    Thank you for your help & your link reference. It turns out that I have a virtual disk & never knew about it.
    Event error 257 - MS Windows Defrag-image.png
    However, I never deliberately created it & don't know how it got there. All I've ever done is mount or unmount Macrium Reflect images. I will post another question as to how to get rid of this virtual disk (which is read only), unless it somehow is necessary.

    I wonder if it was created when I tested the Windows Sandbox because the instructions, in part read: "As you terminate the experience, the virtual machine and its content will be erased from your device permanently without affecting your device installation of Windows 10."

    Additional: That was it. I went to Turn Windows features on or off & unchecked Windows Sandbox & the virtual disk disappeared. I haven't been using it anyhow & if I do decide to use it again, I'll try to learn more about it. Thank you again for your patience & leading me to the answer.
      My Computers


  7. Posts : 9
    Windows 10 Pro x64 1909
       #17

    I just encountered this issue, and found that the cause for this issue was a file system error within the image. in my case, the file system of the sandbox image was reading as RAW (I ran chkdsk within sandbox and it said it could not run chkdsk because the filesystem was RAW). even though sandbox would still work, it was slow as heck. removing the Hyper-V and sandbox components from windows and then reinstalling them should solve the issue.
      My Computers


  8. Posts : 4,224
    Windows 10
       #18

    I had the same thing pop up on a couple of my PCs, and learned that it's specific to 1903 (and persists into 1909). Here's a blog post I wrote on this topic: Investigating 1903 PortableBaseLayer Partition (Win10.Guru). Right now, I have 10 PCs at the office and it's present on 2 of them.
    --Ed--
      My Computers


 

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