Author Topic: 'auto assign drive letters' fails on external HDD  (Read 2505 times)

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Offline tw372

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'auto assign drive letters' fails on external HDD
« on: April 16, 2015, 10:54:19 AM »

This utility functions correctly if a USB memory stick is inserted, but it does not work if a bare SATA hard drive is connected through a USB adapter.  Multiple adapters from different vendors were tested with the same result.


  • In all cases the adapter driver was automatically installed by Microsoft update servers
  • The hard drive appears in Device Manager / Disk Drives
  • The volume appears in Computer Management / Storage
  • The volume is accessible through Windows Explorer if a drive letter is manually assigned in Computer Management.

I understand that this program is only supposed to enable a feature of Windows, not provide additional functionality.  I just want to know if Windows is technically capable of auto-mounting volumes on hard drives which are connected through a USB adapter... and if so, what is the command to enable this feature.
« Last Edit: April 16, 2015, 11:04:41 AM by tw372 »

Offline Shane

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Re: 'auto assign drive letters' fails on external HDD
« Reply #1 on: April 16, 2015, 06:23:41 PM »
Thats odd, I connect hard drives to my usb adapter all the time and windows gives it a drive letter every time.

Open a cmd.exe as administrator then type in


Once done and in diskpart just put in
automount enable

that is what my program does. :wink:


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