You can change the letter assignments in the Windows Disk Management Console with a lot of mouse clicks but you have to do it again for every new device. Therefore the assingments often overwrite each other, especially on low letters near the first available ones. Windows can save only one letter per drive and one drive per letter.

This is fixed by XP-SP3 in most situations. The USB drive then appears to be invisible.

If there is a network share on this letter, Windows XP will use it anyway for the new USB drive because since XP network shares are specific to the current user and not visible in the 'System' context where the letter is assigned. When a removable drive (USB flash drive, flash card reader, portable hard drive) is attached for the first time, Windows mounts it to the first available 'local' drive letter. Here are some tips for solving problems with USB drives. If Windows has problems with the USB drives itself then USBDLM cannot fix it. It works on Windows XP to Windows 11 and Server 2003 to 2022. It automatically solves conflicts between USB drives and network or subst drives of the currently logged on user.įurthermore you can define new default letters for USB drives and much more. Running as service makes it independent of the logged on user's privileges, so there is no need to give the users the privilege to change drive letters. USBDLM is a Windows service that gives control over Windows' drive letter assignment for USB drives. This page is available in German language too USBDLM V5.5.7 - USB Drive Letter Manager for Windows

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