Bitlocker waking up non-encrypted HDD drives every hour

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  1. Sebastian7
    Posts : 8
    Windows 10 Pro 64-bit
       New #1

    Bitlocker waking up non-encrypted HDD drives every hour


    So I'm running Bitlocker encrypted and non-encrypted HDD disks and have set up disk to sleep after 5 minutes.

    However, every hour Bitlocker wakes up the disks that are _not_encrypted, apparently to check if they can be encrypted, or something similar. Disks that have all partitions encrypted are not affected and remain sleep.

    This is extremely annoying and I haven't figured out how to disable this behavior. Please help me to disable this nonsense.

    Using Process Monitor exposes "FveIsVolumeEncryptable":

    Bitlocker waking up non-encrypted HDD drives every hour-cap1.pngBitlocker waking up non-encrypted HDD drives every hour-cap2.pngBitlocker waking up non-encrypted HDD drives every hour-cap3.png
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  3. bro67
    Posts : 9,790
    Mac OS Catalina
       New #2

    See this how to do a Sleep study. Generate Sleep Study Report in Windows 10 Also generate Generate System Sleep Diagnostics Report in Windows 10 Post the output in a post.
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  4. Sebastian7
    Posts : 8
    Windows 10 Pro 64-bit
    Thread Starter
       New #3

    bro67 said:
    See this how to do a Sleep study. Generate Sleep Study Report in Windows 10 Also generate Generate System Sleep Diagnostics Report in Windows 10 Post the output in a post.
    Thanks, but my problem is not related to sleeping whole system, only (specific) disks.
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  6. bro67
    Posts : 9,790
    Mac OS Catalina
       New #4

    Known issue. Workaround is to use Hibernate not sleep. https://social.technet.microsoft.com...om-sleep-issue

    This is a quote from one of the posts.

    "As far as I know, a sleeping drive is not without power - its controller board is still powered, and will remain in an unlocked state unless explicitly told to lock (and it is this explicit locking I'm guessing that Microsoft started doing with the 1607 build - but on the other hand, if they did then they should have discovered the bug as well, so maybe it is really a TPM related issue as strophy says).

    A lot more information (and other similar attack vectors) can be found in this extremely interesting paper (pdf file):


    https://www.blackhat.com/docs/eu-15/...onments-wp.pdf


    The authors recommend not using sleep mode for now, until operating systems, OEM computer manufacturers or drive manufacturers implement protections against it (e.g. by using explicit locking, data cable unplugging detection etc). Some already have protections in place, it seems, but apparently most don't."
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  7. Sebastian7
    Posts : 8
    Windows 10 Pro 64-bit
    Thread Starter
       New #5

    @bro67 please read my original post more carefully before pasting random links

    The problem is that Bitlocker is waking up NON ENCRYPTED _DISKS_ every hour but I want those disk remain sleep instead.

    Computer stays on whole time.
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  8. bro67
    Posts : 9,790
    Mac OS Catalina
       New #6

    Again it is a known issue. See my last post. You can also look at those wakeup events with Powercfg or https://gallery.technet.microsoft.co...-woke-a1408069
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  9. Sebastian7
    Posts : 8
    Windows 10 Pro 64-bit
    Thread Starter
       New #7

    Anyone have any suggestions?
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  10. sygnus21
    Posts : 5,899
    Win 11 Pro (x64) 22H2
       New #8

    Sebastian7 said:
    Anyone have any suggestions?
    I've never seen the issue you describe and out of the 5 SSD drives in my system 2 were encrypted with BitLocker and I had no waking PC every hour. In fact I had no sleep issues at all. Any yes, my OS drive was using BitLocker.

    And I agree... bro67 is not getting your point.... "BitLocker" seems to be causing your issue. Anyway, I've no suggestions as your issue is completely odd to me. And I'm not even aware BitLocker can do what you say it's doing, but...
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  12. Sebastian7
    Posts : 8
    Windows 10 Pro 64-bit
    Thread Starter
       New #9

    sygnus21 said:
    I've never seen the issue you describe and out of the 5 SSD drives in my system 2 were encrypted with BitLocker and I had no waking PC every hour. In fact I had no sleep issues at all. Any yes, my OS drive was using BitLocker.

    And I agree... bro67 is not getting your point.... "BitLocker" seems to be causing your issue. Anyway, I've no suggestions as your issue is completely odd to me. And I'm not even aware BitLocker can do what you say it's doing, but...
    But how do you know SSD drives are not "spinning" up? Because in my case I can clearly hear mechanics spinning up. But you cant't hear SSD drives so how to tell if they are sleeping or not?

    Again, my computer is NOT sleeping or waking at any point, only disks.
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  13. sygnus21
    Posts : 5,899
    Win 11 Pro (x64) 22H2
       New #10

    Sebastian7 said:
    But how do you know SSD drives are not "spinning" up? Because in my case I can clearly hear mechanics spinning up. But you cant't hear SSD drives so how to tell if they are sleeping or not?

    Again, my computer is NOT sleeping or waking at any point, only disks.

    First off, there are no "mechanical parts" inside an SSD so I've no idea what you're hearing but it's definitely not parts spinning inside your SSD drive. Again, SSD drives are not mechanical drives and don't use mechanical parts to operate. It's what actually separates them from the traditional HDD drives.

    Some further reading....


    With that, if you're hearing spinning noises you've either got HDD drives in your system, or something else is going on. Regardless, even in that situation (having HDD drives), I'm not sure BitLocker does this on-off thing that's causing your sleep issues.

    BTW many (including me), have sleep issues with our PC's from time to time as there are far too many things that can actually impact sleep mode; but again, I'm quite sure BitLocker isn't one of them.

    Please clarify which drives you actually have.
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