Working Deduplication files for Microsoft Windows 10

Discussion in 'Windows 10' started by dreamss, Oct 4, 2014.

  1. HappyProgger

    HappyProgger MDL Novice

    Jul 7, 2020
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    I tried many times to force dedup work on my existing 20H2/19041 build (and 20H1 too) and nothing helped - there were errors after second mounting.
    Now I created virtual machine with 1909 windows and mount/maintain my large deduped VHDX inside it as it is mounted natively by Hyper-V. Drive is shared via SMB and can be reached from host system. Normally it consumes only 1-2GB RAM when it is launched to let me use my deduped drive when I need it. It is acceptable tradeoff as for me.
     
  2. terminx

    terminx MDL Novice

    Feb 13, 2010
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    My last post in this thread does explain how to get your deduplicated volume to mount again...
     
  3. deadair3210

    deadair3210 MDL Novice

    Jul 8, 2015
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    Recently getting an issue where my drive will refuse to optimize or pretty much do any dedup job other than unoptimize, claims the filesystem is possibly damaged with a 0x8056530E error code. I checked the filesystem multiple times and there is no damage but the system still refuses to do anything. Anyone have any ideas?
     
  4. Rainmaker52

    Rainmaker52 MDL Novice

    Mar 25, 2018
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    So, it's rather obvious to do, but still thought I'd post it.
    This is what I have running now, and it causes me to be able to use dedup almost as normal.

    I've placed a .ps1 file somewhere on my computer with these contents:

    Remove-Item "D:\System Volume Information\Dedup\Settings\HSM.00.CFG"
    Remove-Item "D:\System Volume Information\Dedup\Settings\HSM.01.CFG"
    Enable-DedupVolume -Volume D: -DataAccess

    Now, go to Task Scheduler and schedule a task when you login. Make sure you select Run as "SYSTEM".

    Reference the .ps1 file.
    I've also tinkered a bit with delaying it on startup.

    This causes the access to the volume to be available within a minute after logging in.

    Thanks to terminx for finding this workaround.

    upload_2020-12-11_17-44-14.png