Unable to mount fat or ntfs drives after updating

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The kernel changed default ntfs driver from FUSE one to ntfs3.
These two are not fully compatible, mainly as far as mount options go. If you have custom mount options in the fstab (or any other application, such as VeraCrypt) they need to be changed.

Symptoms:
Mount fails with: Device or resource busy
DMESG reports: Can't open blockdev

Solution:
Migrate your mount options:

  • allow_other → umask=000
  • default_permissions → [drop]
  • user_id=1000 → uid=1000
  • group_id=1000 → gid=1000
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