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Pourquoi my Windows drive appearing as encrypted in Linux (Ubuntu)?

ayi

Pourquoi mon Windows 11 installation drive shown as encrypted in Linux GUI when we want to simply mount the drive, when il y a following points to note?

BitLocker is désactivé
Data encryption n'est pas activé.
Norton AntiVirus is there, but it ne show any encryption-related stuff.
Windows has a Local Administrator activé (J'ai access).

J'ai essayé following Linux distributions for double checking.

Ubuntu 22.04 (Jammy Jellyfish) (Liveboot)
Kali Linux (Liveboot)

Screenshots are following for some du commands highlighted in comments.

The output du command manage-bde -status C: is the following:

cd C:\Windows\System32
manage-bde -status C:

Output:

BitLocker Drive Encryption: Configuration Tool version 10.0.22621
Copyright (C) 2013 Microsoft Corporation. All rights reserved.

Volume C: []
[OS Volume]

    Size:                 476.21 GB
    BitLocker Version:    2.0
    Conversion Status:    Used Space Only Encrypted
    Percentage Encrypted: 100.0%
    Encryption Method:    XTS-AES 128
    Protection Status:    Protection Off
    Lock Status:          Unlocked
    Identification Field: Unknown
    Key Protectors:       None Found

Je viens de either need my drive normally accessible as other drives are or need to extract that secret for decryption if possible.

ayi

You do in fact have a BitLocker-encrypted disk – c'est in a "dormant" or "clear clé" mode, where the disk directly stores its own decryption clé so there's no passphrase or anything. (Cela a the advantage of reducing cleartext data vers le minimum should you ever decide to activer BitLocker dans le future.)

Actuellement Linux cryptsetup ne yet support this mode, but you pourrait être able to access the volume using the older tools, either dislocker or bdemount (the latter from "libbde") – they ne sont pas integrated invers le graphical fichier manager, but have more extensive support of various BitLocker configurations.

You également can fully decrypt the disk by disabling BitLocker using bde-manage -off.