USBDLM (USB Drive Letter Manager)

guest · Oct 26, 2022

USBDLM is a Windows service that gives control over Windows' drive letter assignment for USB drives. 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.

It automatically solves conflicts between USB drives and network or subst drives of the currently logged on user.
Furthermore you can define new default letters for USB drives and much more.
It works on Windows XP to Windows 11 and Server 2003 to 2019.
Click to expand...

What it is not
USBDLM isn't a wonder tool. If Windows has problems with the USB drives itself then USBDLM cannot fix it.
Here are some tips for solving problems with USB drives.
Click to expand...

USBDLM can for newly attached USB drives:

• check if the letter is used by a network share of the currently logged on user and assign the next letter that is really available
• reserve letters, so they are not used for local drives
• assign a letter from a list of new default letters, also dependent on many different criteria as the active user, drive type, connection (USB, FireWire), USB port, volume label, size and others
• assign letters for a specific USB drive by putting an INI file on the drive
• remove the drive letters of card readers until a card is inserted
• show a balloon tip with the assigned drive letter(s)
• define autorun events depending on many different criteria
• activate a basic protection against 'BadUSB' devices; USBDLM can ask on arrival of a USB keyboard or network device if it shall be activated
• many other things, see help file, available online as HTML version too
Click to expand...

(USB Drive Info belongs natively to USBDLM)

USBDLM 5.5.5 Released (September 4, 2022)
Website
History
Configuration

Running without a configuration USBDLM only prevents that a new drive gets the letter of a network share or a subst drive of the currently logged on user. It remounts then to the next letter that is really available.

USBDLM is configured thru a text file, the USBDLM.INI. The USBDLM.INI is read from the folder of the USBDLM.EXE.
Click to expand...

Download (or via: Majorgeeks / Softpedia)

V5.5.5 (04 September 2022)

Rollback: As before V5.4.9 USBDLM ignores the GPT attribute GPT_BASIC_DATA_ATTRIBUTE_NO_DRIVE_LETTER (Bit 63). Background: I had no idea where this attribute comes from. It turned out that this attribute is often not set intentionally, it is set by the Windows Disk Management when a drive letter is removed. This makes no difference on the computer where it is done but the drive will get no letter assigned on any other Windows computer by default too. When this behaviour was implemented 20 years ago portable drives > 2 TB (which need GPT partitioning) where probably beyond imagination...

New: UsbDriveInfo can edit GPT partition attributes (right-click on a volume -> Edit -> GPT Partition Attributes)

Click to expand...

V5.5.4 (01 August July 2022)

Bugfix: USBDLM since V5.5.2 removed the drive letter of GPT partitions with the attribute in bit 63 set (GPT_BASIC_DATA_ATTRIBUTE_NO_DRIVE_LETTER, diskpart calls it "nodefaultdriveletter"). Now USBDLM just does not touch the drive letter of such volumes. As before you can let USBDLM ignore the attribute by IgnoreNoDefaultDriveLetterAttribute=1 in section [Settings]

V5.5.3 (25 July 2022)

Bugfix: USBDLM.msi V5.5.2.x failed to update any older installed version

Bugfix: UsbDriveInfo V5.5.2.0 could not start the Windows Disk Manager, Device Manager and Event Viewer

Conclusion: I should release Beta versions again

V5.5.2 (24 July 2022)

New: USBDLM removes the drive letter of Windows "System Reserved" partitions on MBR drives (which get a drive letter assigned when a system drive is put into a USB case)

New: Variable and criteria UsbPortMaxSpeed, e.g. for customized balloon-tips

New: Optional polling for new media and the no media no letter feature (for a few DVD drives which fail to send a proper notification)

New: UsbDriveInfo handles empty CD/DVDs better

New: UsbDriveInfo can open the Windows Registy Editor and jump to device related keys

Bugfix: Some problems with BitLocker To Go fixed

V5.5.1 (07 Nov 2021)

Bugfix: OnServiceStart and OnServiceStarted did not work since V5.4.9

EASTER · Oct 26, 2022

With all do respect, there are still even Windows XP programs that DO NOT need a 'service' to burn resources which does the same exact function without one. One can change drive letter assignments WITHOUT a program that needs a service to operate.

But i am a sucker for trying these type programs in hopes of discovering some new option worthwhile.

guest · Nov 13, 2022

USBDLM (USB Drive Letter Manager) 5.5.6 Released (November 13, 2022)
Website
History
Download (or via: Majorgeeks / Softpedia)
Code:
Win32 ZIP (about 1 MB):
https://www.uwe-sieber.de/files/usbdlm.zip
Win32 MSI (about 1 MB):
https://www.uwe-sieber.de/files/usbdlm.msi
x64 ZIP (about 1 MB):
https://www.uwe-sieber.de/files/usbdlm_x64.zip
x64 MSI (about 1 MB):
https://www.uwe-sieber.de/files/usbdlm_x64.msi
V5.5.6 (13 November 2022)

Bugfix: USB High-Speed devices reporting a USB version 2.1 no more assumed being SuperSpeed capable

New: The MSIs creating an entry in "Programs and Features" aka "Add/Remove Programs"

Click to expand...

guest · Jan 22, 2023

USBDLM (USB Drive Letter Manager) 5.5.7 Released (January 22, 2023)
Website
History
Download (or via: Majorgeeks / Softpedia)
Code:
Win32 ZIP (about 1 MB):
https://www.uwe-sieber.de/files/usbdlm.zip
Win32 MSI (about 1 MB):
https://www.uwe-sieber.de/files/usbdlm.msi
x64 ZIP (about 1 MB):
https://www.uwe-sieber.de/files/usbdlm_x64.zip
x64 MSI (about 1 MB):
https://www.uwe-sieber.de/files/usbdlm_x64.msi
V5.5.7 (22 Jan 2023)

Bugfix: USBDLM may crash when arrival and removal events are triggered in fast succession for the same drive

Bugfix: UsbDriveInfo showed a messagebox after writing a report by command-line

Bugfix: UsbDriveInfo showed "Error path not found" on Tools -> Compact VHD

Click to expand...

EASTER · Jan 22, 2023

I had forgot but i keep this little program in my specialized apps toolbox. Very informative with pinpoint details.

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