6.3 Using SMARTDrive with Norton Utilities Version 6.0 Disk Monitor Do not use the Disk Protect feature in Norton Utilities Version 6.0 Disk Monitor with SMARTDrive version 4.0. If you try to write to the protected drive, you will encounter an error and your system will fail. If you want to write to and cache a protected drive, add the drive letter to the smartdrv command line in your AUTOEXEC.BAT file. For example, if drive D is a protected drive, you would add the following: smartdrv d Or you can use the Norton cache program instead when using Disk Monitor. .