Because the floppy disk drive is a volume, by default it is shared as an administrative share on the network. If the value of this entry is 1, the floppy disk drive is allocated to the user as part of the interactive logon process and, therefore, only the current user can access it. This prevents administrators and remote users (and even the same user at a different workstation) from accessing the drive while the current user is logged on. The drive is shared again when the current user logs off.
Value Meanings:
'0' = Floppy disks in the floppy disk drive can be accessed by all administrators in the domain.
'1' = Only the user logged on locally can access data on the floppy disks in the floppy disk drive.
Key:[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
Value Name: AllocateFloppies
Data Type: REG_SZ
Data:(0 = enabled, 1 = disabled)
More info: http://support.microsoft.com/support/kb/articles/q172/5/20.asp
