I am unable to create partition/assign drive letter for disk drive. Up on
checking the registry
"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contr ol\Class\{71A27CDD-812A-11D0-BEC7-08002BE2092F}"
the subkeys number reached maximum limit i.e 9999.
( http://www.microsoft.com/technet/pro....mspx?mfr=true )

at the same time, if I delete a subkey from then list, I am able to
create/mount the volume.
looks like, Windows keeps the subkeys of volumes which is no longer valid (
disks were initially presented to the host and later removed)

is this a microsoft limitation? is there any workaround to remove all the
invalid references so that operation succeeds