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I have one drive which is split into two partitions. One partition has Windows 10 installed and another has Windows 7. Does removing a drive letter trought Disk Management in Windows 10, of Windows 7 system and vice-versa, prevent Windows Defender from scanning the other systems files?

Thank you!

Algirdas
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A partition without drive letter in this Windows installation cannot be accessed by normal Windows applications and is in effect invisible. It will also no longer be shown as a drive in File Explorer under "This PC" and not be scanned by Defender.

Removing the drive letter is a well-known method for avoiding any Windows access to a disk or partition.

harrymc
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  • Thank you, I really appreciate your answer! – Algirdas Oct 29 '20 at 14:00
  • This is mostly true (the caveat is there), but volumes can be mounted as a folder and also be accessed using their volume id as in: https://superuser.com/questions/465730/ (only mention for completeness) – Yorik Oct 29 '20 at 15:09