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File Version : 5.1.2600.0 (XPClient.010817-1148)
Description : SCSI Tape Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 5.1.2600.0
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : 4mmdat.sys
File Size: 11904 byte(s) 11.640 KB
MD5 : 5aab191f00864924c1e5d26c73808a79
SHA1: E7FBAE8A6AB07E99A824528A036DA13D4A56EB7F

Download 4mmdat.sys
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How to Install 4mmdat.sys
Repair Sys ProblemsFixing a corrupted or missing 4mmdat.sys error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.