![]() In XP, the default value for NoDriveTypeAutoRun is 0x95 (149). If you want to disable more than one type of drive, sum the hexadecimal values of the representative bits. To disable AutoPlay on a particular type of drive, set the bit representing that type of drive to 1. For example, you can disable all network and all unknown drives from running AutoPlay, but allow CD-ROM drives to run AutoPlay, and thus start automatically.īelow, is a table of the hex values to control AutoPlay on a variety of drives. The benefit of using NoDriveTypeAutoRun, rather than NoDriveAutoRun, is that you can fine-tune which drives you wish to disable. ![]() You can disable AutoPlay by configuring the appropriate value of NoDriveTypeAutoRun (or NoDriveAutoRun) in the registry. However, if these messages are suppressed then the CD will not automatically start playing. Media Change Notification (MCN) messages from the CD-ROM driver, trigger the AutoPlay behaviour of the CD. Previously I had known about plain AutoRun, but now I have found a more flexible registry setting, NoDriveTypeAutoRun. Researching NoDriveTypeAutoRun, reminds me of a tip that I was given for playing chess when you find a good move, look for an even better one. This registry hack will control what happens to AutoPlay when you put a CD into the drive caddy.
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