This is the rest of the story:
Ghostbusting In Device Manager
(Show Hidden Devices Expanded)
Windows keeps a Device Manager entry for every piece of
hardware that's ever been recognized by the system, regardless
of whether it is currently present in the machine or was even
set up correctly in the first place. The "View Hidden Devices"
option in Device Manager won't show you these "residual"
drivers. You can force it to show you everything by going to
My Computer Properties, the Advanced tab, Environment
Variables, and adding a new system variable with the name
"DEVMGR_SHOW_NONPRESENT_DEVICES" and a value of 1. Now opening
Device Manager and choosing "Show Hidden Devices" really will
show you everything. Standard practice at the factory is to
use a single image and just move it from model to model,
letting it plug and play all the new hardware along the way.
This leaves you with an impressive list of hardware still in
the Device Manager, but no longer in the system. You also see
this to a lesser degree when you restore a system from an
image you created for backup purposes. These "residual"
drivers can sometimes cause all kinds of weirdness and are
best removed by right-clicking on their entry in the Device
Manager and choosing "uninstall".
This works on Windows 2000/XP (and I assume Server 2003,
though I haven't tried it).
My logical D drive has all files deleted according to WE (hidden files are
enabled). 'My Computer' shows 21.8GB free out of 24.4GB. Diskeeper shows
89% free. When Diskeeper analyses and defrags, various file names of the
form ANNNNNNN.exe (Ns are numerics) are displayed. Anyone know what gives?
Thanks, John.