Auto USB Drive Mounting
2008 May 22 – 11:30 am
For some time now we’ve had an issue at some customers sites that their servers don’t auto assign a drive letter to a USB drive when added. This is a bit of a pain as some customers use USB HDs for backups, so each time they change them we need to connect in and mount them with the right drive letter.
There is a fix 
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Windows Server 2003 Enterprise and DataCenter Edition do not assign drive letters to new fixed drives (USB and Firewire disks are usually ‘fixed’). This is up to the administrator because otherwise SAN (Storage Area Network) drives might be mounted accidentally.
This feature is called AutoMount and can be enabled by means of the DiskPart tool: Open a commandprompt, enter diskpart, on the DiskPart prompt enter automount to see the current state or automount enable to enable it.
Courtesy of uwe-sieber.