TheWindowsClub covers authentic Windows 11, Windows 10 tips, tutorials, how to, features, freeware. Created by Anand Khanse, MVP. If you encounter a situation where Windows only detects one of two NTFS drives connected simultaneously , despite both being physically connected, this might be due to identical disk signatures. This issue is common when one drive is cloned from another, resulting in identical identifiers. The issue arises because the disk signature a unique identifier is the same...